behringer gx110

Hi

A friend of mine brought a Behringer GX110 amp and asked me to fix it. When he turn on the amp, the amp works perfect. When using the amp for quite a long time, the sound becomes intermittent. It comes on then goes off, on then off. Can someone let me know, what can be the problem. I do not have a schematic. Does anyone has?. Please assist.

Thanks

Carlosraj
 
First suspects are jacks.

Plug a spare cord from FX send to FX return, this creates an external bypass on the loop. ANy change?

The external speaker jack has a cutout contact for the internal speaker. Connect some speaker to the external speaker jack. Does it work reliably?

The headphones jack has a speaker cutout contact as well. Do headphones work? Does poking a plug into the phones jack try to wake up the speaker?


Internally there are some ribbon cables connecting the various sections together, or if not ribbons, SOME sort of cabling. I'd pull each one partly off and then push it back on to refresh the contact surfaces.


Certainly it could be something electronic, but in my experience, mostly what you describe is caused by the things I mentioned.
 
First suspects are jacks.

Plug a spare cord from FX send to FX return, this creates an external bypass on the loop. ANy change?

The external speaker jack has a cutout contact for the internal speaker. Connect some speaker to the external speaker jack. Does it work reliably?

The headphones jack has a speaker cutout contact as well. Do headphones work? Does poking a plug into the phones jack try to wake up the speaker?




Internally there are some ribbon cables connecting the various sections together, or if not ribbons, SOME sort of cabling. I'd pull each one partly off and then push it back on to refresh the contact surfaces.


Certainly it could be something electronic, but in my experience, mostly what you describe is caused by the things I mentioned.


Thanks, I will try all your suggestions as well as those from Ian and Tattoo
 
Behringer GX110 guitar amplifier don´t work

Good afternoon friends

I would like some help please.

My Behringer GX110 has stopped working.
Last night everything was fine and I played for 2 hours, but today when I turned it on, there was no signal.
The led does not light up when the power switch is turned on.
t seems that he was suddenly without power supply.
I've seen the fuse and I think it's fine, as well as the power cord
What damage will it be?

Thank you