Hi folks! I haven't seen this issue in other threads and hope someone might have a helpful idea here. Sorry if I am duplicating - please link me to the other post(s).
My Kenwood KA-9100 amp recently developed an issue that it cuts sound to the left speaker in stereo. The sound is either super low volume or distorted / with static just on the left speaker. If I flip to mono the sound is equal and great on both sides. If I flip to reverse stereo, the issue is reversed, so I know it is not just the speaker. I run only one set of speakers on the A circuit, a vintage pair of Polk 5jr monitors. For a while, I thought the issue was dirt in the bass adjustment knob and/or in the subsonic filter button because wiggling or pushing there changed the signal loss audibly. But again, since it only happens on stereo settings, I wonder if it is really as simple as a cleaning? If so, please advise - I have some Deoxit but haven't been sure where exactly to spray, from outside or by removing the top cover. I seem to remember that these pots are not easily accessible even with the cover off, and I don't want to do any serious disassembly at home. (In case it matters, I am using the amp on phono and aux mostly, to either listen to records or stream audio via an Apple airport express wi-fi using the aux input. Same problem with both sources. I do have a tuner hooked up, the matching KT-7500, just haven't had much luck with antenna reception here yet...)
If all else fails, maybe someone can recommend a trustworthy and friendly repair tech around Scottsdale / Phoenix?
Thank you!!!!!
My Kenwood KA-9100 amp recently developed an issue that it cuts sound to the left speaker in stereo. The sound is either super low volume or distorted / with static just on the left speaker. If I flip to mono the sound is equal and great on both sides. If I flip to reverse stereo, the issue is reversed, so I know it is not just the speaker. I run only one set of speakers on the A circuit, a vintage pair of Polk 5jr monitors. For a while, I thought the issue was dirt in the bass adjustment knob and/or in the subsonic filter button because wiggling or pushing there changed the signal loss audibly. But again, since it only happens on stereo settings, I wonder if it is really as simple as a cleaning? If so, please advise - I have some Deoxit but haven't been sure where exactly to spray, from outside or by removing the top cover. I seem to remember that these pots are not easily accessible even with the cover off, and I don't want to do any serious disassembly at home. (In case it matters, I am using the amp on phono and aux mostly, to either listen to records or stream audio via an Apple airport express wi-fi using the aux input. Same problem with both sources. I do have a tuner hooked up, the matching KT-7500, just haven't had much luck with antenna reception here yet...)
If all else fails, maybe someone can recommend a trustworthy and friendly repair tech around Scottsdale / Phoenix?
Thank you!!!!!