I've scoured the forums looking for answers on why my KA-7300's volume knob is so intermittent. There are some volumes where I can hear both channels, and some where only the right channel works. I tried tightening the tabs on the pot behind the volume/balance knob once but that made the problem worse, not better. I also tried RatShack contact cleaner and that didn't seem to help either.
I have experience the turn-on thump delay circuit problem which I half-solved by replacing the relay. This was about 10 years ago, long before I knew about this site and before I had much electronics experience. I've since gotten my EE and am less stupid in such matters.
I measured the DC offset to be 20.1mV and 21.3mV in case EchoWars is listening.
Does anyone know of a suitable replacement pot for the volume/balance? I'd be content to kill of the balance and go to straight volume if that made sourcing a part any easier. I love this amp and I just want to figure out how to make it reliable.
Realistically any suggestions at all are welcome.
I have experience the turn-on thump delay circuit problem which I half-solved by replacing the relay. This was about 10 years ago, long before I knew about this site and before I had much electronics experience. I've since gotten my EE and am less stupid in such matters.
I measured the DC offset to be 20.1mV and 21.3mV in case EchoWars is listening.
Does anyone know of a suitable replacement pot for the volume/balance? I'd be content to kill of the balance and go to straight volume if that made sourcing a part any easier. I love this amp and I just want to figure out how to make it reliable.
Realistically any suggestions at all are welcome.