cracking/popping Marshall amp - Jemsite
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post #1 of 6 (permalink) Old 02-02-2004, 08:39 PM Thread Starter
 
Join Date: Jan 2002
Location: Bowling Green, Ohio
Posts: 388
cracking/popping Marshall amp

hey folks.

this buddy of mine has a Marshall VS100R that he bought in 1997. after about a minute or so, after it has warmed up, it makes a cracking and popping noise (very loud) with or without the guitar/cable plugged in.

he's looking to fix it up himself, if possible. any ideas?

thanks in advance!
wildealien is offline  
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post #2 of 6 (permalink) Old 02-02-2004, 09:09 PM
 
Join Date: Dec 2000
Location: Australia
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Hey there,

My JCM2000 100w head did exactly the same thing. I think the tubes are dying dude. I got new power tubes and had it rebiased which fixed the problem for me.

wil..
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post #3 of 6 (permalink) Old 02-03-2004, 04:23 PM
 
Join Date: Feb 2002
Location: Richmond, Kentucky
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The vs100r is a valvestate amp. WHich means its solid state. NO tubes to go bad. Ive seen some solid state amps overheat and do a similar thing, since it works fine for the first minute or so, that would be a possiblity
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post #4 of 6 (permalink) Old 02-03-2004, 04:49 PM Thread Starter
 
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Quote:
Originally Posted by sniperfrommars1
The vs100r is a valvestate amp. WHich means its solid state. NO tubes to go bad. Ive seen some solid state amps overheat and do a similar thing, since it works fine for the first minute or so, that would be a possiblity
so, you think the electronics might just be burnt out?
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post #5 of 6 (permalink) Old 02-03-2004, 05:15 PM
 
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I thought the VS stood for valve state - hence one pre amp valve?

-better shred than dead-ANDY
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post #6 of 6 (permalink) Old 02-03-2004, 06:43 PM
 
Join Date: Jul 2002
Location: Wetzlar, Germany
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Quote:
Originally Posted by Jammy
I thought the VS stood for valve state - hence one pre amp valve?
Yes, one ECC38 in the preamp-section
LennyNero is offline  
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