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Old 12-15-2012, 11:06 PM   #21
Grumpy Old Tech
Cathbard's Avatar
Join Date: Oct 2009
Location: Australia
Once again, somebody using a noise gate to patch over a faulty amp. You don't just turn up the radio when your car's engine start making a lot of noise - you fix the engine.
It could be several things but if it hums excessively with no pedals and with any guitar or cable then you have a fault in the amp.
Listen to Rob. Start by trying to identify a faulty tube by substitution. If that fails to rectify the problem it's time to start pulling the amp apart which unless you are a tech really means - take it to a tech.
Gilchrist custom
Yamaha SBG500
Randall RM100 & RM20
Abbey Harmonic II
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Marshall 1960A
Boss GT-100

Cathbard Amplification
My band

Last edited by Cathbard : 12-15-2012 at 11:07 PM.
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