I am desperate to get my 6100 repaired and need a reputable repair guy.

Any ideas?

Well, that must have been a surprise. That cap went south either by just being old or there is a voltage problem meaning excessive voltage but that doesnt seem likely as it is after reg402 which would be -15vdc. It is c404 on the schematic. I would recommend changing all the electrolytics in that h...

Loose tube sockets CAN cause issues. If they are that loose you might want to replace them as the contacts could be disconnecting with the tube pins after the amp gets warm or vice-versa. The sockets are inexpensive, it's the work involved in changing them that is time consuming. But i will add if ...

Ok. Never assume tubes are always good. You are going to need to check this head with a new set of power tubes, just to rule out the old set. Are you able to bias them your self? Somethings got me a bit worried though, the MIDI should load upon power up and the channel switching and led's should wo...

Anitoli wrote:The hum is coming from the speakers even with the tubes out?

No. With the tubes out there's no sound at all.

Is this sizzling hum coming from the Speakers or inside the amp such as a transformer? Are you ABSOLUTELY positive the output fail fuses are 500MA? Remove ALL the tubes and turn on the amp. Does the led's light? does it channel switch? Is it still making that sizzle hum? The sizzling hum is coming ...

My 6100 is currently my only Marshall. I Sold my EL34 4500 which I very much regret, and I sold my JVM410. I decided to keep the 6100 because it's sort of a middle ground between the two. It does everything I want, but not a bunch of stuff I'll never use. Anyway, typically, now that I'm down to one ...

Thanks for the welcome guys. I mistakenly thought that the Series/Parallel switch was Series in the out position, and Parallel in the in position, but according to the handbook, it's the opposite. Operational Note F: Effects Loop The main effects loop on this amplifier can be configured either as a ...

Christy Canyon was great and all, back in the day, but I'll go with Sunny Lane myself. There's nothing like a nice tight, round bottom end!

First post, new 6100 30th Anniversary EL34 owner here. I've been gassing hard for one of these for years now, and I finally found one for a good price that wasn't beat to hell, and just happened to have the money available. I'd like to share a few initial impressions, and I'd be interested to hear w...