GK MB210 Problem

[afshinmoshrefi]

I've been using a MB210 for a couple of years now. Starting one day, the sound started cutting out in the middle of playing. The effect sounds like someone turn the volume down and back up again. Issue happens more as I play louder!
Any ideas what this issue may be ?

 

[B-string]

I might try working the headphone jack with a plug a few times. Other than that email [email protected] he should have some info.

 

[miketallica315]

I've recently starting having the same issue. Did you ever get this problem resolved or get information on the problem? I'd appreciate your feedback.

 

[5port]

If the amp has effects jacks (in/out) clean them with contact cleaner then insert a male plug a few times. These oxidize over time with lack of use.

 

[afshinmoshrefi]

If the amp has effects jacks (in/out) clean them with contact cleaner then insert a male plug a few times. These oxidize over time with lack of use.

That's a good suggestion.
Friday Night I discovered if I turn off the amp between songs, problem of cutting out happened less.
It seems like Heat has something to do with it.

 

[miketallica315]

My MB210 doesn't seem to be over heating. My problem is the output levels are crazy. What I mean is that the passive input has become abnormally loud and the active input is practically nonexistent. I have taken contact cleaner to the extension cab out, the D.I., the headphone out, as well as both inputs. I also took a1/4 inch cable in and out repeatedly into the headphone out and both inputs.
Unfortunately, I have noticed no improvements. Are there any other suggestions, has anyone else noticed this problem? I appreciate all of the help!!!