need repair help in Behringer amp

[JazzbassArt]

I think the advice to first check with the warranty procedure is a good move. Hope you get it fixed.

 

[T-Bird]

Hi.

First of all, welcome to TalkBass
Secondly, please fill up Your profile.
Thirdly, we are trying to help people here and if it's clear that they may do harm to themselves, as is more than probable with electrical appliances, we proceed with caution. Most just pass and don't reply, some see it as an opportunity to...You might want to do a search about that .

All I could find of that amp is a crappy pic of the front, so I don't even know what's on the back of the cab.

I doubt that You find anything serviceable inside of the amp and please don't hurt Yourself, but this is how I would try to open it.

The four side screws and the four top screws most probably hold the amp in the cab, so those have to come off. It could be beneficial to first take off the grille and the speaker as the speaker leads may not be detachable on the amp end.

Your problem may be a number of things, but it sounds like the hybrid power chip that was most likely used in the amp section, goes to fault mode because of something. Usually easily repairable once the reason for the fault is found. The worst part of any Behringer products is the total lack of schematics, that often quadruples the time needed for troubleshooting.

Without proper test equipment, a signal generator, a scope and a good multimeter at minimum and knowledge about how to use them and about the circuitry, any electrical appliances are more or less unrepairable. IMHO Your best bet would be to sell the combo as spares, should bring about 1/4 of the purchase price, and put that and the refund towards something else, perhaps another Behringer if You're confident enough.

Regards
Sam