Roland 880ex master fader not working and Channel 6 pan is acting like an auto fader

SOURCE: Sound only coming out opf left channel

Probably there are dirty contacts inside the assign switch, also it could be a bad solder contact on the switch or there around.

The switch can either be removed and cleaned or replaced.

Cleaning is a bit delicate procedure, but can actually be done, you need to take the switch apart, taking care not to damage any of the parts, then you need to clean the inner contacts and the contact making clamps with some fine sandpaper.

Be sure to put everything back together as it was otherwise the switch may not work properly or it may not work at all (be gentle with the contact making clamps, they can easily be damaged / squashed).

It could also be a problem with faders or preamps, but i would take a look at the switch first.

regards

3rq8 (Triarcuate)

SOURCE: I have a behringer xenyx 2442 and the main output

The utput fader has probably been broken. If the knob takes a hit, it breaks the resistance element. The part is inexpensive but it takes a lot of work to access and replace the part.