mojobass Posted May 11 Share Posted May 11 Anyone had any issues with the GK MB500 head?? Last gig I noticed mine was dropping volume a few times!? Quote Link to comment Share on other sites More sharing options...
msb Posted May 11 Share Posted May 11 The fan in my MB200 somehow got gunked up and stopped working. Then came the pink ring of doom. I do know a qualified repair guy and the fan was fixed , but other damage was done , the power module had to be replaced , and some little things got burned up. Today the amp works perfectly. And I’m reassured when I hear a fan kick in. Quote Link to comment Share on other sites More sharing options...
King Tut Posted May 11 Share Posted May 11 I had to have my XLR socket replaced under warranty, other than that it's been faultless and well travelled. Try cleaning the FX send / return sockets and/or putting a patch cable between them. Quote Link to comment Share on other sites More sharing options...
rOB Posted May 12 Share Posted May 12 No issues with mine. Had it for years. Quote Link to comment Share on other sites More sharing options...
cetera Posted May 13 Share Posted May 13 Put a short patch lead between the send/return inputs on the fx loop. Sometimes an oxidisation build up has this effect (pun) on a GK amp. 2 Quote Link to comment Share on other sites More sharing options...
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