Hoffman Amplifiers Tube Amplifier Forum

Other Stuff => Solid State => Topic started by: tubenit on November 01, 2009, 03:29:01 pm

Title: Behringer amp problem
Post by: tubenit on November 01, 2009, 03:29:01 pm: Keyboardist is using a Behringer amp as a monitor. One of the volume pots for one of the channels makes a considerable hum and has alot of volume coming thru on 0. However, when you dial it to 2 ......... it sounds normal and like "2".

In other words, dialing to zero has more volume (plus a hum) than 2. Probably a bad pot or would you consider some other problem?

I have not taken the amp apart & I'm not sure I want to work on it? Do you know if the pots are in a PCB board?

with respect, Tubenit
Title: Re: Behringer amp problem
Post by: PRR on November 01, 2009, 06:20:24 pm: > Do you know if the pots are in a PCB board?

I don't "know" (especially with the slim clue "a Behringer amp"); but I bet you a whole-house water-filter that everything is PCB mount.

I can't make sense of the symptoms. Being Beeringer, it may be considered disposable. So pop the lid, use your bright light, and look for cracked solder joints. Especially on pot-legs. But if you have to take more than a dozen knobs off or a dozen screws out to find the PCB, just scrap it.

> I'm not sure I want to work on it?

Fools rush in. You are very wise.
Title: Re: Behringer amp problem
Post by: tubenit on November 01, 2009, 07:55:50 pm: Once I stopped laughing ......... your response was a good reality check for me. It confirmed my suspicions about
taking this on. Maybe they'll chunk it for a good amp.

Thanks, Tubenit
Title: Re: Behringer amp problem
Post by: DummyLoad on November 02, 2009, 10:24:44 pm: Quote from: tubenit on November 01, 2009, 07:55:50 pm
Once I stopped laughing ......... your response was a good reality check for me. It confirmed my suspicions about
taking this on. Maybe they'll chunk it for a good amp.

Thanks, Tubenit

you are a wise man. :)
Title: Re: Behringer amp problem
Post by: Jack1962 on July 19, 2010, 02:08:16 pm: very wise man , if you look up Behringer in the dictionary you see a picture of the dump lmao

Rock On
Title: Re: Behringer amp problem
Post by: tubesornothing on July 19, 2010, 09:24:26 pm: yeah - if you can run away, that would be good. After my last run in with a mesa PCB, I will never go there again...