That's why I changed all the rectifier diodes in case it was AC coming down the path, but I'll admit I'm still learning these things. I'll get some voltages posted soon.

Its literally blowing them apart. I hit the rafters in my garage with a piece of flying debris. I'll take out the regulators and get some numbers. I have them in the right spot btw. I did pull out a chunk of metal, a welded chassis nut for the case that had broken off. Who knows what damage that thing did in there.

I am working on a Fender Bassman 400 ss bass head, its is blowing voltage regulators to bits. I replaced the 7815 and 7915 regulators and it blew 'em again. I have now replaced them once more along with all the diodes nearby. Instead of lifting one leg to test each I just went ahead and replaced all D100-111. Q102 was also blown and replaced. Ready to start it up on the limiter, anything else I should check beforehand?

Thanks for clearing that up, I figured since it was 29 years old (it is an 84) that they were bad. I will get voltages today and go from there.

I have a Peavey M2600 power amp on the bench right now with low output. Guessing the main caps are shot. They are 5000uf 55v. Having trouble finding these but I do have some 6800uf 80v will those be okay? Thanks.

I did find another transformer with the right voltage I can use if neccessary. But 'Ill draw up the current configuration and try to get that up here this weekend.

Building a solid state guitar amp, everything is ready to go except my rail power is too high. I'm running 52 volts and would like to get around 25-30 volts. I'm using a 36 volt power supply w center tap into a full wave rectifier and two 2200uf 50v caps. What's my best solution? Thanks

Thanks a ton! Just about have everything soldered except those and a power switch and led. Should be quite the little jammer!

Building a chipamp based on a LM1875. I'm using 2200uF caps in the amp circuit and a 34.5vac transformer. Really the only question I have is what size filter caps to use after the rectifier.

We opted to let it die in peace. The nice thing is its modular so the power amp can be switched out very easily should he find another one. Not worth trying to fix when another can be had for about the same price. I'll offer to waive his bench fee and add $20 to keep it for parts

Here's the PDF. It took me a minute just to find the power amp page..so I see where your coming from..lol.

Yep definitely thought about taking it off his hands! But heres the schematic. I have a PDF file too.

Yeah, I've dealt with them a few times and its always pleasant. I let my customer know his parts are $$$ he's on the fence with getting it repaired because he can get another one for $150. He's thinking about it and will let me know. I'd like to get some progress on it in the next day or so and see if I can't get it buttoned up quickly. BBL

Just put a request in for a schematic with Gene over at Peavey. I'll get it posted later tonight when I get out of work.

I have quite a few MJI15004's too.