rebais during winter? - Page 2

steelhorse · 12-25-2008, 05:07 AM

I'm guessing that something may have been affected by the wrong bias the first time out.

The bias only does the power tubes but it's difficult to say what the issue may be unless you:

1) numbered the pre amp tubes so you could put them back in the same socket
2) how long it was improperly biased and how much you attempted to play through it and or bias until you discovered the wrong MM setting.

Still though, if you did replace the pre amp tubes you could try putting the old ones back in but if you didn't then I'm guessing that something more than a tube needs to be looked at or the tubes you got from GC were not a true matched set.

DragonSarc · 12-26-2008, 03:42 AM

Quote:

Originally Posted by steelhorse

I'm guessing that something may have been affected by the wrong bias the first time out.

The bias only does the power tubes but it's difficult to say what the issue may be unless you:

1) numbered the pre amp tubes so you could put them back in the same socket
2) how long it was improperly biased and how much you attempted to play through it and or bias until you discovered the wrong MM setting.

Still though, if you did replace the pre amp tubes you could try putting the old ones back in but if you didn't then I'm guessing that something more than a tube needs to be looked at or the tubes you got from GC were not a true matched set.

k I used my old preamp tubes to test it, the old tubes that i had didnt really have a problem i replaced them with the JJs to get a better sound but they were the original tubes from the factory thou, and the tubes at GC it was the Boogie matched 2 in the pack and bought 2 pack, I tested the preamp tube 1 by 1 and put the tubes back to its on socket ( didnt mixed them up), do you think its the tubes?

DragonSarc · 12-26-2008, 03:52 AM

K i just ordered a Full retube kit from Euro - ordered the KT77 high gain kit hope fully this will solve the problem and this time ill make sure to set the MM at the right settings and just biased it at 70mV to be safe

steelhorse · 12-26-2008, 04:05 AM

Cool that you ordered a new set but you didn't say that replacing with the old helped but I'm presuming it didn't.

Good luck with that and let us know what happens after the re-tube.

DragonSarc · 12-26-2008, 04:25 AM

Quote:

Originally Posted by steelhorse

Cool that you ordered a new set but you didn't say that replacing with the old helped but I'm presuming it didn't.

Good luck with that and let us know what happens after the re-tube.

i didnt replace the whole preamp tubes at the same time i did it 1 by 1 i was planing to do it just didnt get time but ill do it tomorrow and see, if it does not make any difference should i install the new tube kit? or hold off till i get the amp checked out?

steelhorse · 12-26-2008, 06:16 AM

IT doesn't take that long to do so it might be a good idea to try that first unless you were planning on taking it in anyway.

DragonSarc · 12-29-2008, 07:38 PM

hey steel I got the new kit and installed it rebiasd it right ( i just went 70mV this time) its a little louder but still lacking the punch and grutt on clean and crunch and ODs with VPR off and on 12 o clock positions, i think theres something wrong inside, the clean is still gritty, the OD sounds like a dang solid state, Ill try to look for a descent shop here in the SF bay dont really wanna bring it to GC people are incompetent there not sure if they know what thier doing

steelhorse · 12-29-2008, 08:59 PM

Dang, sorry to hear that it didn't bring it all the way back for you.

I agree that you should take it to a shop that has a good reputation and are reasonable and won't rip you off if all it took was a resistor change or something like that.

Ask reputable players you know who they trust to use. SF must have a few good ones I'm guessing.

DragonSarc · 12-30-2008, 08:23 PM

dang i just noticed i might have messed my amp more than i know, cable is plugged at the wrong side

any idea what have i blown inside with this? i heard if the ohms are mismatched it could be a serious damage on the amp and wont never be the same once its fixed.

luekemeyer · 12-30-2008, 08:41 PM

The output transformer is what will be damaged by this. Doesn't mean that is was....

big dooley · 12-31-2008, 02:30 AM

70mV is a bit too cold, imo...
safe? yes, but it takes more, to get the best from the KT77's
tried to bias them a bit hotter? it can make one hell of a difference!!!

DragonSarc · 12-31-2008, 03:34 AM

Quote:

Originally Posted by big dooley

70mV is a bit too cold, imo...
safe? yes, but it takes more, to get the best from the KT77's
tried to bias them a bit hotter? it can make one hell of a difference!!!

should i go 80mV? yeah but would that fix the sound of the amp? the clean chanel wasnt like that before its more clean than dirty on 12 vol and 10-11 on gain and its lackin the grunt and body its almost sounds like how your car speakers are kinda distorting when about to blow out.

steelhorse · 12-31-2008, 03:43 AM

Yeah they recommend between 80-90 mV

big dooley · 12-31-2008, 10:01 AM

the way you describe your sound, i's say your tubes are biased too cold
and on the other hand...
setting your bias on a "safe setting" is not a good solution for problem like a bias drift

stock_hippie · 12-31-2008, 10:08 AM

Quote:

Originally Posted by big dooley

the way you describe your sound, i's say your tubes are biased too cold
and on the other hand...
setting your bias on a "safe setting" is not a good solution for problem like a bias drift

agreed

DragonSarc · 12-31-2008, 07:10 PM

so set it at 80mV but how come the clean is not clean its still gritty and dirty? wont my tube be affected if theres something wrong with the amp?

steelhorse · 12-31-2008, 07:15 PM

It won't matter. If something is wrong, something is wrong and you should take it in to get it looked at.

Try turning the gain down first.

DragonSarc · 12-31-2008, 08:30 PM

k biased at 80mV and it sounded a little better played it for about 20 mins but the volume/punch is still not there, luekemeyer said the output transformer might be blown so i touched the transformer at the back one is warm (rightside) and the other is cold (left) both transformer should be atleast warm right?

steelhorse · 01-01-2009, 01:04 AM

Not sure, never felt my transformers up before

big dooley · 01-01-2009, 04:51 PM

neither did i....

DragonSarc · 01-06-2009, 04:35 AM

Since i blown my OP transformer im thinking of doing the Deluxe Mod, what do you guys think? too much/not worth it?

Voodoo Amps JCM2000 TSL100 Mods

steelhorse · 01-06-2009, 06:14 AM

Did a tech tell you your OT was toast?

Either way the Deluxe Mod sounds pretty good & after reading up on it via the link you sent, I may send one of my own amps out just to see how it holds up toe to toe against a stocker.

And the following is for the folks who think that tube amps should be plug in and go and wonder why an amp requires so much 'tweaking'.

Read carefully what a lot of the tube amp players are saying even after or especially after they've had their amps modded:

Voodoo Amps Marshall JCM 2000 TSL 100 Mod: Harmony Central User Reviews

They have to work to find the tone. That is a real key factor here for good tube amps, you really need to dig in and get after it for a real magical tone.

If I fire up my JSX or TSL100, 6100LM or even my Triple Rectifier, I'm there. It's in the pocket and good to go and that's pretty much the extent of it. I get a range of really decent working tones and sounds.

The VM on the other hand (as well as the Jubilee to a certain extent) really requires me to really work the amp and the guitar and really dig in to 'get there'.

The difference being and I believe there are others that can verify this with certain vintage amps, once you get 'there' there is the only place you want to be. It's the mojo.

Back on topic, good luck with it DragonSarc, I think you'll be happier in the end!

javier pintos · 01-06-2009, 02:54 PM

Hi Guys, i need some advice here

i recently changed the tubes on a DSL100, and they went bad for some reason or they were bad when we got them, anyway i just went back to the original tubes since i have no new replacements however the odd thing is this

One thing that I noticed with the original tubes (GT) is that I was just not able to set them between 80 – 90 mV DC, the left tubes ended at 80 mv and the left tubes ended at about 95 mV DC, no red plating, no weird noises, no blown fuses, everything worked fine, any ideas? (this amp is from 2000)

I have access to a different DSL100 (made in 199) with JJ EL34´s or E34L´s (I don´t recall), what I noticed on this amp is that the bias voltage on the right side is at about 77 mV DC, and the left side is at about 93 mV DC, and is working fine, I don´t hear anything weird, no red plate, or anything, I cheched voltages with 2 different multimeters, also the voltages were fluctuating while playing (on both amps), have you seen this before?

Originally i installed a set of KT77 that were really sweet untill they went bad, i had some trouble setting them at 85 mV but once they were there they sounded very good for a while, already sent this info to Euro to see if they seen this before also since the KT77 were from them, however i´m not sure they sent bad tubes since one of my friends kids got to them and played round for a while ´til we noticed

DragonSarc · 01-07-2009, 04:50 AM

Quote:

Originally Posted by javier pintos

Hi Guys, i need some advice here

i recently changed the tubes on a DSL100, and they went bad for some reason or they were bad when we got them, anyway i just went back to the original tubes since i have no new replacements however the odd thing is this

One thing that I noticed with the original tubes (GT) is that I was just not able to set them between 80 – 90 mV DC, the left tubes ended at 80 mv and the left tubes ended at about 95 mV DC, no red plating, no weird noises, no blown fuses, everything worked fine, any ideas? (this amp is from 2000)

I have access to a different DSL100 (made in 199) with JJ EL34´s or E34L´s (I don´t recall), what I noticed on this amp is that the bias voltage on the right side is at about 77 mV DC, and the left side is at about 93 mV DC, and is working fine, I don´t hear anything weird, no red plate, or anything, I cheched voltages with 2 different multimeters, also the voltages were fluctuating while playing (on both amps), have you seen this before?

Originally i installed a set of KT77 that were really sweet untill they went bad, i had some trouble setting them at 85 mV but once they were there they sounded very good for a while, already sent this info to Euro to see if they seen this before also since the KT77 were from them, however i´m not sure they sent bad tubes since one of my friends kids got to them and played round for a while ´til we noticed

check this post might help ----->

Quote:

Originally Posted by dcooper830

Here's a page that has wealth of JCM 2000 bias talk/info. Mostly centering on the poorly designed TSL 122.

But it has the identical bias pot set-up as the DSL 100.

The Marshall TSL122-JCM2000 Repair/Mods Page

There's a lot of technical info in there that I don't understand cause I know very little about all that stuff.

hey steel - ive talk to couple of shop and they said thats what it sounds like but i have to take them in to see what else is wrong, they said the transformer alone will cost about $250 plus installation and plus what ever else is wrong. Im wondering if i could replace the OP transformer my self.

steelhorse · 01-07-2009, 05:18 AM

I'm not sure if I'd waste the time and money bro. You seem interested in getting it upgraded/modded anyway and messing with components you've never worked on before unguided is not something I personally recommend.

Here's another person to contact and check out his reviews and policies etc.

Marshall

Jerry will diagnose the amp and you can go from there as to what mods you want. If the OT is a problem and needs to be replaced just have him install his custom OT and so on and so forth.

If you can afford repairs. diagnostics, etc. it just makes more sense to me to have it looked at and modded simultaneously if you get my drift. Of course if it's not affordable then you're at the mercy of the techs in your area and hope you don't get taken for a long ass ride. If you need to go that route all work should be approved by you beforehand and all prices should be in writing. Additionally, all work should have a decent warranty connected with it. FJA has a year for his mods and I imagine Voodoo has some kind of coverage as well.

javier pintos · 01-07-2009, 09:52 AM

Quote:

Originally Posted by javier pintos

Hi Guys, i need some advice here

i recently changed the tubes on a DSL100, and they went bad for some reason or they were bad when we got them, anyway i just went back to the original tubes since i have no new replacements however the odd thing is this

One thing that I noticed with the original tubes (GT) is that I was just not able to set them between 80 – 90 mV DC, the left tubes ended at 80 mv and the left tubes ended at about 95 mV DC, no red plating, no weird noises, no blown fuses, everything worked fine, any ideas? (this amp is from 2000)

I have access to a different DSL100 (made in 199) with JJ EL34´s or E34L´s (I don´t recall), what I noticed on this amp is that the bias voltage on the right side is at about 77 mV DC, and the left side is at about 93 mV DC, and is working fine, I don´t hear anything weird, no red plate, or anything, I cheched voltages with 2 different multimeters, also the voltages were fluctuating while playing (on both amps), have you seen this before?

Originally i installed a set of KT77 that were really sweet untill they went bad, i had some trouble setting them at 85 mV but once they were there they sounded very good for a while, already sent this info to Euro to see if they seen this before also since the KT77 were from them, however i´m not sure they sent bad tubes since one of my friends kids got to them and played round for a while ´til we noticed

Eurotubes came back with the following "very unmatched tubes", so here it is FWIW

have a nice day

DragonSarc · 01-11-2009, 06:56 AM

K i sent my amp out to have it check, fixed and had the OP trany upgreade to Mercury Magnetics, I didnt go with the Voodoo mod cuz its $560 + what ever repair needs to be done due to the OP blow out + shipping out to them, now I have no amp to play with 1 of my buddy told me today that 1 of his buddy (

he needs the money bad) is selling his TSL 100 to him for $500 (head no cab) and the only thing that it needs is a retubing - since he doesnt have the muhlah hes offering it to me - Should I buy it? retube it and sell it for a little more? (i got set of tubes here thats good and could just use those for the amp) its verry tempting what you guys think?

steelhorse · 01-11-2009, 08:35 AM

Or you could wind up with another amp that not only needs a re-tube but needs to be repaired as well....

Have it checked out first before you commit cuz if it sounds too good to be true it probably is.

DragonSarc · 01-11-2009, 05:47 PM

Quote:

Originally Posted by steelhorse

Or you could wind up with another amp that not only needs a re-tube but needs to be repaired as well....

Have it checked out first before you commit cuz if it sounds too good to be true it probably is.

thats what im thinking too maybe after few months it might choke and end up with another repair Ill hold off thanks steel

DragonSarc · 01-22-2009, 04:57 AM

UPDATE:

k took the amp to a shop last week and the tech told me the OT was bad so he was about to order the MercMag but the guys at MercMag was in NNAM and told be he will order it this week, today He emailed me and did an intensive swoop on the amp and found out that the OT was good the problem was the circuitry on the phase inverter was bad and some soulder work that was bad so he fixed the phase inverter and resouldered the board, so he hold off on the MercMag trany and told me the total was only $60 bucks ( i was shocked that it was cheap i thought i was gonna spend a fortune

) so I told him go ahead and order the MercMag might as well do the up grade gives me a badder sounding amp YEAHHHHHHH, the OT is $250 and installation was $30 bucks well worth it ...................................

12-25-2008, 05:07 AM	#31 (permalink)
steelhorse Senior Member Join Date: May 2008 Posts: 3,888	Re: rebais during winter? I'm guessing that something may have been affected by the wrong bias the first time out. The bias only does the power tubes but it's difficult to say what the issue may be unless you: 1) numbered the pre amp tubes so you could put them back in the same socket 2) how long it was improperly biased and how much you attempted to play through it and or bias until you discovered the wrong MM setting. Still though, if you did replace the pre amp tubes you could try putting the old ones back in but if you didn't then I'm guessing that something more than a tube needs to be looked at or the tubes you got from GC were not a true matched set. __________________ www.ricojronline.com 760-956-6619 Garmopat Pedal Mods "I wouldn't mind hearing your head smash through a glass door. That would be cool..." luekmeyer

12-26-2008, 03:52 AM	#33 (permalink)
DragonSarc Senior Member Join Date: Jun 2008 Location: San Leandro, CA Posts: 495	Re: rebais during winter? K i just ordered a Full retube kit from Euro - ordered the KT77 high gain kit hope fully this will solve the problem and this time ill make sure to set the MM at the right settings and just biased it at 70mV to be safe __________________ JVM410H w/ 1960 Vintage A & 1960 Lead B Valvestate 2000 AVT 100 W/ JJ tesla Hi-Gain Preamp Gibson LP studio faded mahagony w/ Burstbuckers Pro V MIJ ESP Edwards Les Paul w/ Duncan JB and 59's Fender American Strat w/ Noiseless Vintage pups LTD EC-500 Jackson Stealth Pro MIJ

12-26-2008, 04:05 AM	#34 (permalink)
steelhorse Senior Member Join Date: May 2008 Posts: 3,888	Re: rebais during winter? Cool that you ordered a new set but you didn't say that replacing with the old helped but I'm presuming it didn't. Good luck with that and let us know what happens after the re-tube. __________________ www.ricojronline.com 760-956-6619 Garmopat Pedal Mods "I wouldn't mind hearing your head smash through a glass door. That would be cool..." luekmeyer

12-26-2008, 06:16 AM	#36 (permalink)
steelhorse Senior Member Join Date: May 2008 Posts: 3,888	Re: rebais during winter? IT doesn't take that long to do so it might be a good idea to try that first unless you were planning on taking it in anyway. __________________ www.ricojronline.com 760-956-6619 Garmopat Pedal Mods "I wouldn't mind hearing your head smash through a glass door. That would be cool..." luekmeyer

12-29-2008, 07:38 PM	#37 (permalink)
DragonSarc Senior Member Join Date: Jun 2008 Location: San Leandro, CA Posts: 495	Re: rebais during winter? hey steel I got the new kit and installed it rebiasd it right ( i just went 70mV this time) its a little louder but still lacking the punch and grutt on clean and crunch and ODs with VPR off and on 12 o clock positions, i think theres something wrong inside, the clean is still gritty, the OD sounds like a dang solid state, Ill try to look for a descent shop here in the SF bay dont really wanna bring it to GC people are incompetent there not sure if they know what thier doing __________________ JVM410H w/ 1960 Vintage A & 1960 Lead B Valvestate 2000 AVT 100 W/ JJ tesla Hi-Gain Preamp Gibson LP studio faded mahagony w/ Burstbuckers Pro V MIJ ESP Edwards Les Paul w/ Duncan JB and 59's Fender American Strat w/ Noiseless Vintage pups LTD EC-500 Jackson Stealth Pro MIJ

12-29-2008, 08:59 PM	#38 (permalink)
steelhorse Senior Member Join Date: May 2008 Posts: 3,888	Re: rebais during winter? Dang, sorry to hear that it didn't bring it all the way back for you. I agree that you should take it to a shop that has a good reputation and are reasonable and won't rip you off if all it took was a resistor change or something like that. Ask reputable players you know who they trust to use. SF must have a few good ones I'm guessing. __________________ www.ricojronline.com 760-956-6619 Garmopat Pedal Mods "I wouldn't mind hearing your head smash through a glass door. That would be cool..." luekmeyer

12-30-2008, 08:23 PM	#39 (permalink)
DragonSarc Senior Member Join Date: Jun 2008 Location: San Leandro, CA Posts: 495	Re: rebais during winter? dang i just noticed i might have messed my amp more than i know, cable is plugged at the wrong side any idea what have i blown inside with this? i heard if the ohms are mismatched it could be a serious damage on the amp and wont never be the same once its fixed. __________________ JVM410H w/ 1960 Vintage A & 1960 Lead B Valvestate 2000 AVT 100 W/ JJ tesla Hi-Gain Preamp Gibson LP studio faded mahagony w/ Burstbuckers Pro V MIJ ESP Edwards Les Paul w/ Duncan JB and 59's Fender American Strat w/ Noiseless Vintage pups LTD EC-500 Jackson Stealth Pro MIJ

12-30-2008, 08:41 PM	#40 (permalink)
luekemeyer Senior Member Join Date: Nov 2008 Location: Calif Posts: 439	Re: rebais during winter? The output transformer is what will be damaged by this. Doesn't mean that is was.... __________________ --------------------------------------------------- http://www.youtube.com/Earnhardt12345 JCM 2000 DSL 100 & MC412 Cab Crate Blue Voodoo BV-120H and 4x12 Cab ADA 1/2 Cab POD X3 Live VOX ToneLab Tube Screamer Flanger Phase 90 Chorus Crybaby Wah Epi Les Paul Plus Top - Dimarzio Super Distortions Dean Dime Shadow ML - Dimebucker bridge Ibanez RG - Van Halen II paint job - Dimebucker Kramer Aerostar Fender Squire Strat(From Corona Plant employee sale)

12-31-2008, 02:30 AM	#41 (permalink)
big dooley Senior Member Join Date: Sep 2008 Location: zealand, netherlands Posts: 397	Re: rebais during winter? 70mV is a bit too cold, imo... safe? yes, but it takes more, to get the best from the KT77's tried to bias them a bit hotter? it can make one hell of a difference!!!

12-31-2008, 03:43 AM	#43 (permalink)
steelhorse Senior Member Join Date: May 2008 Posts: 3,888	Re: rebais during winter? Yeah they recommend between 80-90 mV __________________ www.ricojronline.com 760-956-6619 Garmopat Pedal Mods "I wouldn't mind hearing your head smash through a glass door. That would be cool..." luekmeyer

12-31-2008, 10:01 AM	#44 (permalink)
big dooley Senior Member Join Date: Sep 2008 Location: zealand, netherlands Posts: 397	Re: rebais during winter? the way you describe your sound, i's say your tubes are biased too cold and on the other hand... setting your bias on a "safe setting" is not a good solution for problem like a bias drift

12-31-2008, 07:10 PM	#46 (permalink)
DragonSarc Senior Member Join Date: Jun 2008 Location: San Leandro, CA Posts: 495	Re: rebais during winter? so set it at 80mV but how come the clean is not clean its still gritty and dirty? wont my tube be affected if theres something wrong with the amp? __________________ JVM410H w/ 1960 Vintage A & 1960 Lead B Valvestate 2000 AVT 100 W/ JJ tesla Hi-Gain Preamp Gibson LP studio faded mahagony w/ Burstbuckers Pro V MIJ ESP Edwards Les Paul w/ Duncan JB and 59's Fender American Strat w/ Noiseless Vintage pups LTD EC-500 Jackson Stealth Pro MIJ

12-31-2008, 07:15 PM	#47 (permalink)
steelhorse Senior Member Join Date: May 2008 Posts: 3,888	Re: rebais during winter? It won't matter. If something is wrong, something is wrong and you should take it in to get it looked at. Try turning the gain down first. __________________ www.ricojronline.com 760-956-6619 Garmopat Pedal Mods "I wouldn't mind hearing your head smash through a glass door. That would be cool..." luekmeyer

12-31-2008, 08:30 PM	#48 (permalink)
DragonSarc Senior Member Join Date: Jun 2008 Location: San Leandro, CA Posts: 495	Re: rebais during winter? k biased at 80mV and it sounded a little better played it for about 20 mins but the volume/punch is still not there, luekemeyer said the output transformer might be blown so i touched the transformer at the back one is warm (rightside) and the other is cold (left) both transformer should be atleast warm right? __________________ JVM410H w/ 1960 Vintage A & 1960 Lead B Valvestate 2000 AVT 100 W/ JJ tesla Hi-Gain Preamp Gibson LP studio faded mahagony w/ Burstbuckers Pro V MIJ ESP Edwards Les Paul w/ Duncan JB and 59's Fender American Strat w/ Noiseless Vintage pups LTD EC-500 Jackson Stealth Pro MIJ

01-01-2009, 01:04 AM	#49 (permalink)
steelhorse Senior Member Join Date: May 2008 Posts: 3,888	Re: rebais during winter? Not sure, never felt my transformers up before __________________ www.ricojronline.com 760-956-6619 Garmopat Pedal Mods "I wouldn't mind hearing your head smash through a glass door. That would be cool..." luekmeyer

01-01-2009, 04:51 PM	#50 (permalink)
big dooley Senior Member Join Date: Sep 2008 Location: zealand, netherlands Posts: 397	Re: rebais during winter? neither did i....

01-06-2009, 04:35 AM	#51 (permalink)
DragonSarc Senior Member Join Date: Jun 2008 Location: San Leandro, CA Posts: 495	Re: rebais during winter? Since i blown my OP transformer im thinking of doing the Deluxe Mod, what do you guys think? too much/not worth it? Voodoo Amps JCM2000 TSL100 Mods __________________ JVM410H w/ 1960 Vintage A & 1960 Lead B Valvestate 2000 AVT 100 W/ JJ tesla Hi-Gain Preamp Gibson LP studio faded mahagony w/ Burstbuckers Pro V MIJ ESP Edwards Les Paul w/ Duncan JB and 59's Fender American Strat w/ Noiseless Vintage pups LTD EC-500 Jackson Stealth Pro MIJ

01-06-2009, 06:14 AM	#52 (permalink)
steelhorse Senior Member Join Date: May 2008 Posts: 3,888	Re: rebais during winter? Did a tech tell you your OT was toast? Either way the Deluxe Mod sounds pretty good & after reading up on it via the link you sent, I may send one of my own amps out just to see how it holds up toe to toe against a stocker. And the following is for the folks who think that tube amps should be plug in and go and wonder why an amp requires so much 'tweaking'. Read carefully what a lot of the tube amp players are saying even after or especially after they've had their amps modded: Voodoo Amps Marshall JCM 2000 TSL 100 Mod: Harmony Central User Reviews They have to work to find the tone. That is a real key factor here for good tube amps, you really need to dig in and get after it for a real magical tone. If I fire up my JSX or TSL100, 6100LM or even my Triple Rectifier, I'm there. It's in the pocket and good to go and that's pretty much the extent of it. I get a range of really decent working tones and sounds. The VM on the other hand (as well as the Jubilee to a certain extent) really requires me to really work the amp and the guitar and really dig in to 'get there'. The difference being and I believe there are others that can verify this with certain vintage amps, once you get 'there' there is the only place you want to be. It's the mojo. Back on topic, good luck with it DragonSarc, I think you'll be happier in the end! __________________ www.ricojronline.com 760-956-6619 Garmopat Pedal Mods "I wouldn't mind hearing your head smash through a glass door. That would be cool..." luekmeyer

01-06-2009, 02:54 PM	#53 (permalink)
javier pintos Senior Member Join Date: Sep 2008 Location: Mexico Posts: 323	Re: rebais during winter? Hi Guys, i need some advice here i recently changed the tubes on a DSL100, and they went bad for some reason or they were bad when we got them, anyway i just went back to the original tubes since i have no new replacements however the odd thing is this One thing that I noticed with the original tubes (GT) is that I was just not able to set them between 80 – 90 mV DC, the left tubes ended at 80 mv and the left tubes ended at about 95 mV DC, no red plating, no weird noises, no blown fuses, everything worked fine, any ideas? (this amp is from 2000) I have access to a different DSL100 (made in 199) with JJ EL34´s or E34L´s (I don´t recall), what I noticed on this amp is that the bias voltage on the right side is at about 77 mV DC, and the left side is at about 93 mV DC, and is working fine, I don´t hear anything weird, no red plate, or anything, I cheched voltages with 2 different multimeters, also the voltages were fluctuating while playing (on both amps), have you seen this before? Originally i installed a set of KT77 that were really sweet untill they went bad, i had some trouble setting them at 85 mV but once they were there they sounded very good for a while, already sent this info to Euro to see if they seen this before also since the KT77 were from them, however i´m not sure they sent bad tubes since one of my friends kids got to them and played round for a while ´til we noticed

01-07-2009, 05:18 AM	#55 (permalink)
steelhorse Senior Member Join Date: May 2008 Posts: 3,888	Re: rebais during winter? I'm not sure if I'd waste the time and money bro. You seem interested in getting it upgraded/modded anyway and messing with components you've never worked on before unguided is not something I personally recommend. Here's another person to contact and check out his reviews and policies etc. Marshall Jerry will diagnose the amp and you can go from there as to what mods you want. If the OT is a problem and needs to be replaced just have him install his custom OT and so on and so forth. If you can afford repairs. diagnostics, etc. it just makes more sense to me to have it looked at and modded simultaneously if you get my drift. Of course if it's not affordable then you're at the mercy of the techs in your area and hope you don't get taken for a long ass ride. If you need to go that route all work should be approved by you beforehand and all prices should be in writing. Additionally, all work should have a decent warranty connected with it. FJA has a year for his mods and I imagine Voodoo has some kind of coverage as well. __________________ www.ricojronline.com 760-956-6619 Garmopat Pedal Mods "I wouldn't mind hearing your head smash through a glass door. That would be cool..." luekmeyer

01-11-2009, 06:56 AM	#57 (permalink)
DragonSarc Senior Member Join Date: Jun 2008 Location: San Leandro, CA Posts: 495	Re: rebais during winter? K i sent my amp out to have it check, fixed and had the OP trany upgreade to Mercury Magnetics, I didnt go with the Voodoo mod cuz its $560 + what ever repair needs to be done due to the OP blow out + shipping out to them, now I have no amp to play with 1 of my buddy told me today that 1 of his buddy ( he needs the money bad) is selling his TSL 100 to him for $500 (head no cab) and the only thing that it needs is a retubing - since he doesnt have the muhlah hes offering it to me - Should I buy it? retube it and sell it for a little more? (i got set of tubes here thats good and could just use those for the amp) its verry tempting what you guys think? __________________ JVM410H w/ 1960 Vintage A & 1960 Lead B Valvestate 2000 AVT 100 W/ JJ tesla Hi-Gain Preamp Gibson LP studio faded mahagony w/ Burstbuckers Pro V MIJ ESP Edwards Les Paul w/ Duncan JB and 59's Fender American Strat w/ Noiseless Vintage pups LTD EC-500 Jackson Stealth Pro MIJ

01-11-2009, 08:35 AM	#58 (permalink)
steelhorse Senior Member Join Date: May 2008 Posts: 3,888	Re: rebais during winter? Or you could wind up with another amp that not only needs a re-tube but needs to be repaired as well.... Have it checked out first before you commit cuz if it sounds too good to be true it probably is. __________________ www.ricojronline.com 760-956-6619 Garmopat Pedal Mods "I wouldn't mind hearing your head smash through a glass door. That would be cool..." luekmeyer

01-22-2009, 04:57 AM	#60 (permalink)
DragonSarc Senior Member Join Date: Jun 2008 Location: San Leandro, CA Posts: 495	Re: rebais during winter? UPDATE: k took the amp to a shop last week and the tech told me the OT was bad so he was about to order the MercMag but the guys at MercMag was in NNAM and told be he will order it this week, today He emailed me and did an intensive swoop on the amp and found out that the OT was good the problem was the circuitry on the phase inverter was bad and some soulder work that was bad so he fixed the phase inverter and resouldered the board, so he hold off on the MercMag trany and told me the total was only $60 bucks ( i was shocked that it was cheap i thought i was gonna spend a fortune ) so I told him go ahead and order the MercMag might as well do the up grade gives me a badder sounding amp YEAHHHHHHH, the OT is $250 and installation was $30 bucks well worth it ................................... __________________ JVM410H w/ 1960 Vintage A & 1960 Lead B Valvestate 2000 AVT 100 W/ JJ tesla Hi-Gain Preamp Gibson LP studio faded mahagony w/ Burstbuckers Pro V MIJ ESP Edwards Les Paul w/ Duncan JB and 59's Fender American Strat w/ Noiseless Vintage pups LTD EC-500 Jackson Stealth Pro MIJ

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