Marshall Amp Forum - View Single Post - my jcm800 modded 2203 died last night..help

AllSheWrote · 11-06-2009, 07:53 AM

yesterday, my fja modded 2203 reissue came in (has a heyboer transformer, depth mod and mid sweep mod)..i was so excited...got it from a reputable seller...turned it on and was in HEAVEN for the first 5 minutes...i started playing with the volumes...i had the preamp around 1:00 and master around 10:00 when i was loving it..that's normally how i run an amp....i turned the preamp way down and cranked the master..then started turning the preamp up to try that...i never even got a chance to turn it up...when i cranked the master, the amp made a weird noise and stopped working...the power was still on so no blown fuse...but no sound...and you could smell smoke...i have NO clue about repairs and whatnot..i just play..i've obviously gotta take it to get fixed but i am worried it's gonna be expensive..i don't think the seller sent me a broken amp because it worked at first..but i don't know to go about this..i love the tone so i don't wanna send the amp back...however, i don't wanna suck up the cost of repairs (if it's alot)

my friend Dale thinks the tubes were bad and i fried them when i cranked the master and that probably blew a resistor...he said it's probably not a hard fix and that the tung sol el34's in my amp arent what i need anyways....he said i would like Ruby el34's biased to between 30 and 35ma per tube based on the fact i'm gonna keep the master around 10:00 to 11:00 and run the preamp accordingly.....any opinions would be greatly appreciated..i just want this issue fixed and pray it doesn't happen again because this amp is a beast!!

11-06-2009, 07:53 AM	#1 (permalink)
AllSheWrote Junior Member Join Date: Nov 2009 Location: Fayetteville, NC Posts: 5	my jcm800 modded 2203 died last night..help yesterday, my fja modded 2203 reissue came in (has a heyboer transformer, depth mod and mid sweep mod)..i was so excited...got it from a reputable seller...turned it on and was in HEAVEN for the first 5 minutes...i started playing with the volumes...i had the preamp around 1:00 and master around 10:00 when i was loving it..that's normally how i run an amp....i turned the preamp way down and cranked the master..then started turning the preamp up to try that...i never even got a chance to turn it up...when i cranked the master, the amp made a weird noise and stopped working...the power was still on so no blown fuse...but no sound...and you could smell smoke...i have NO clue about repairs and whatnot..i just play..i've obviously gotta take it to get fixed but i am worried it's gonna be expensive..i don't think the seller sent me a broken amp because it worked at first..but i don't know to go about this..i love the tone so i don't wanna send the amp back...however, i don't wanna suck up the cost of repairs (if it's alot) my friend Dale thinks the tubes were bad and i fried them when i cranked the master and that probably blew a resistor...he said it's probably not a hard fix and that the tung sol el34's in my amp arent what i need anyways....he said i would like Ruby el34's biased to between 30 and 35ma per tube based on the fact i'm gonna keep the master around 10:00 to 11:00 and run the preamp accordingly.....any opinions would be greatly appreciated..i just want this issue fixed and pray it doesn't happen again because this amp is a beast!!