GasMan
Active Member
My C-4 is my main listening resource, right next to my desk. Avionic re-capped and changed lights to LED in late 2011 and it has been spectacular until recently. In November 2017 the right channel dropped out. Nothing I did externally made it recover so I removed it from my stack and put it on my workbench to look at later. Next day, I powered it up on my bench and all was well!! Worked perfectly every time I powered it up on my bench. Day before yesterday I brought it in and put it back in the stack. Beautiful music all day. Yesterday morning I powered up my stack and...right channel is gone!! Back to the bench (Sure glad I didn't sell the Kenwood Basic C-2!) where it sits now. The only observations I have made so far are visual. Solder points are all good and no plugs are loose. There is one difference between my office and my shop: temperature. My office environment is 65~70 Deg. constantly. Shop gets to the 40Deg range at night. Could that be an issue? When I acquired my C-4 the protect circuit was stuck on. Avionic had me replace several parts including D318, a VD1212 varistor. Could one of the remaining VD1212 in the flat amp board be temperature sensitive? Any suggestions would be appreciated.