Hello!
I was wondering if anyone knew where I could find a schematic for a Marshall EL34 100/100 Poweramp. I'm trying to troubleshoot one for a friend. It has damaged on a flight and one of the channels outputs this strange buzzing noise with almost no guitar output. If you raise the volume, you can hear the guitar through the noise but almost as if it had a weird ring mod effect to it.
At first I thought it was the tubes being that I received the amp with the phase inverter tube knocked out... but I tried the tubes of the working channel in the non-working one and it was no go...
I'm thinking it could either be a blown transformer, power supply component (cap) or a loose solder joint somewhere.
I haven't gone through the hassle of disassembling the whole amp yet. Any insight that might point me to the right direction?
Thanks in advance!
I was wondering if anyone knew where I could find a schematic for a Marshall EL34 100/100 Poweramp. I'm trying to troubleshoot one for a friend. It has damaged on a flight and one of the channels outputs this strange buzzing noise with almost no guitar output. If you raise the volume, you can hear the guitar through the noise but almost as if it had a weird ring mod effect to it.
At first I thought it was the tubes being that I received the amp with the phase inverter tube knocked out... but I tried the tubes of the working channel in the non-working one and it was no go...
I'm thinking it could either be a blown transformer, power supply component (cap) or a loose solder joint somewhere.
I haven't gone through the hassle of disassembling the whole amp yet. Any insight that might point me to the right direction?
Thanks in advance!
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