Help repairing peavey max combo amp

[arthur759]

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photos

 

[B-string]

Is that a burnt component to the bottom just right of center by the blue and red wires on the top photo? Or just a shadow? Can't tell if that is a charr mark from the smaller cap to the right of the two 220mfd caps on the bottom photo.

 

[arthur759]

Is that a burnt component to the bottom just right of center by the blue and red wires on the top photo? Or just a shadow? Can't tell if that is a charr mark from the smaller cap to the right of the two 220mfd caps on the bottom photo.

Just a shadow

 

[B-string]

Can you get a clear pic of the underside of the preamp board where the input jacks are?

 

[arthur759]

The one on the left is the direct out, and the two on the right are the passive and active inputs, sorry I couldn't get a better picture.

 

[B-string]

Not quite sure if I am seeing a cracked input jack!

 

[arthur759]

Not quite sure if I am seeing a cracked input jack!

That's what I see as well, but how does that explain the same problem happening in the active jack, which is the one I normally would use.

 

[arthur759]

Just checked it, definitely not a cracked input jack, just a string of glue, sigh. I have no idea what the problem could be.

 

[B-string]

Passive and active jacks are "usually" not isolated from each other but actually interconnected. I would try "touching up" the solder points on the pcb first.

 

[arthur759]

Thanks for the suggestions, I'll get on that tomorrow, hopefully it will help.

 

[BbbyBld]

Your bottom pic shows a couple of cylinders with 220 stickers on top. If you notice, there are 2 screws to the right that are covered with red thread lock goop. Make sure those particular screws are tight.

 

[arthur759]

Your bottom pic shows a couple of cylinders with 220 stickers on top. If you notice, there are 2 screws to the right that are covered with red thread lock goop. Make sure those particular screws are tight.

I tightened them, they didn't seem loose, but it seems to have fixed the problem at least temporarily.

I cannot thank you enough.

 

[BbbyBld]

Those are the heatsink clamps for the power amp. The power amp will current limit due to running hot and make a static kind of sound if those are not torqued down. Sorry about that. You must have an earlier one. Hopefully you're all set now.

 

[arthur759]

Those are the heatsink clamps for the power amp. The power amp will current limit due to running hot and make a static kind of sound if those are not torqued down. Sorry about that. You must have an earlier one. Hopefully you're all set now.

Yeah, I bought it as soon as it was released in north america, so definitely early. Thank you a lot.