caps drying out

DragonSarc · 07-22-2009, 05:55 PM

how long does the amp have to sit before the caps dries out? I havent used my JVM for about 2 months is that bad? do I got to fire it up at least 1s a month or more?

BrotherJ · 07-23-2009, 04:36 AM

Yep, I hate to say you pretty much will have to throw your amp away now

Just kidding, your amp should be fine!

I've had amps that only got usuage once a month - never a problem at all with filter caps drying out.

PaoloJM · 07-23-2009, 07:52 AM

Quote:

Originally Posted by DragonSarc

how long does the amp have to sit before the caps dries out? I havent used my JVM for about 2 months is that bad? do I got to fire it up at least 1s a month or more?

Most modern caps have a shelf life of over 5 years, and with reasonabley regular use should last over 20 years in service.

Riffraff · 07-23-2009, 07:54 AM

It's a good idea to haul it out and fire it up once in a while. I had an early '70s Sound City L120 that I got when I was 16. I stuck that in a closet for about 5 years when i went through my rack gear days and when I pulled it back out it sounded horrible. I had to do a complete recap on it. Those old amps had large electrolytic cans that were very easy to change. I noticed my Vintage Modern has a bunch of radial lead caps on PCBs. The JVM is probably made the same way. I'm sure that is a much bigger pain in the ass to fix.

DragonSarc · 07-23-2009, 06:14 PM

thanks guys wheewwww, im seeing it often here now people saying thier caps need to be change due to the havent used the amp in a while, yeah i krank it out 1s a month or 2 due to kinda busy at work and on the weekend busy doing stuff with the kids.

axuality · 07-24-2009, 11:55 AM

What are caps? Excuse my ignorance.

Bluemoon78 · 07-24-2009, 11:59 AM

capacitors. Quite an important part of a lot of electrical circuits particularly amps

07-22-2009, 05:55 PM	#1 (permalink)
DragonSarc Senior Member Join Date: Jun 2008 Location: San Leandro, CA Posts: 499	caps drying out how long does the amp have to sit before the caps dries out? I havent used my JVM for about 2 months is that bad? do I got to fire it up at least 1s a month or more? __________________ 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 Last edited by DragonSarc; 07-23-2009 at 02:35 AM.

07-23-2009, 04:36 AM	#2 (permalink)
BrotherJ Senior Member Join Date: Dec 2008 Posts: 267	Re: caps drying out Yep, I hate to say you pretty much will have to throw your amp away now Just kidding, your amp should be fine! I've had amps that only got usuage once a month - never a problem at all with filter caps drying out. __________________ Mesa Stiletto Deuce II - Mesa Traditional quad Marshall DSL50 - 1960AV Quad

07-23-2009, 07:54 AM	#4 (permalink)
Riffraff Senior Member Join Date: Nov 2008 Location: Dutchess County NY Posts: 336	Re: caps drying out It's a good idea to haul it out and fire it up once in a while. I had an early '70s Sound City L120 that I got when I was 16. I stuck that in a closet for about 5 years when i went through my rack gear days and when I pulled it back out it sounded horrible. I had to do a complete recap on it. Those old amps had large electrolytic cans that were very easy to change. I noticed my Vintage Modern has a bunch of radial lead caps on PCBs. The JVM is probably made the same way. I'm sure that is a much bigger pain in the ass to fix.

07-23-2009, 06:14 PM	#5 (permalink)
DragonSarc Senior Member Join Date: Jun 2008 Location: San Leandro, CA Posts: 499	Re: caps drying out thanks guys wheewwww, im seeing it often here now people saying thier caps need to be change due to the havent used the amp in a while, yeah i krank it out 1s a month or 2 due to kinda busy at work and on the weekend busy doing stuff with the kids. __________________ 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

07-24-2009, 11:55 AM	#6 (permalink)
axuality Member Join Date: Apr 2009 Location: Eau Claire, WI (by Minneapolis) Posts: 94	Re: caps drying out What are caps? Excuse my ignorance. __________________ All ad-lib guitar, all the time, including onstage. www.axuality.com

Today
Marshall Amps	Sponsored Links __________________ This advertising will not be shown in this way to registered members. Register your free account today and become a member on Marshall Amp Forum

07-24-2009, 11:59 AM	#7 (permalink)
Bluemoon78 Member Join Date: Jan 2007 Location: Manchester, UK Posts: 82	Re: caps drying out capacitors. Quite an important part of a lot of electrical circuits particularly amps

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode