1980's GK 800 RB humming

iggy · #1 03-03-2013, 09:24 AM

What's up guys. I need help determining why my GK 800 RB is humming and buzzing through my cab. It's not my bass or the speaker because it does not do this with my SWR SM900. What could be wrong or needs to be replaced on the GK? The electrical circuits (outlets) are not the problem either. Thanx. Iggy.

BassmanPaul · #2 03-03-2013, 09:42 AM

It's faulty! Tech Time.

B-string · #3 03-03-2013, 09:45 AM

Sounds like the power supply caps may be in need of replacement? They are about 30 years old now.

iggy · #4 03-03-2013, 01:20 PM

Thanx, looks like a trip to the amp tech is in order.

craig.p · #5 03-03-2013, 01:48 PM

Yep, but don't worry, easy/cheap fix with common parts.