Peavey Combo 115 needs help waking up

heymelbs · #1 09-11-2011, 02:20 PM

I purchased an older Peavey Combo 115 amp a few weeks ago, and it's been a great amp. One issue that I've noticed is occasionally the amp needs to be turned up pretty loud to initially "wake it up." At first there is no sound when I plug it in, but I turn the volume and gain up to 3/4, and I can get it going. It seems like some type of loose connection or something, but I'm not sure. Any ideas would be greatly appreciated.

**B-string** · #2 09-11-2011, 02:48 PM

Either a cold solder joint in the amp or an open in the speakers voice coil would be my guess.

5port · #3 09-11-2011, 02:53 PM

If there are effects loop jacks clean both of them with contact cleaner (Deoxit).

nashvillebill · #4 09-11-2011, 04:39 PM

In my previous band, lead guitar player had a Combo that did the exact same thing. He took it in but the amp shop he took it to did not find anything, and I did not get a chance to take it home to look at it myself. My suspicion though, going from memory, is that there's a switching FET as part of the protection circuitry that for some reason it's not getting switched "on" at startup. Once amp kicked on, it played flawlessly.