mcdermd
Well-known member
Something ... happened
I got my 840AV plugged in and was having some boot issues. At that point I checked the logic board and noticed several leaking caps so I pulled it, cleaned it and recapped it. I put it all back together, sorted my boot issues, reloaded the original System 7.1 from the 840AV install media and all was well. Nice, clear, strong sound from the internal speaker.
I went and installed some of the optional installs (AV apps) and restarted. The "bong" was cut short half way through and ever since then the audio has been nearly nonexistent from the internal speaker. If you turn the volume all the way up you can hear a faint sound from the speaker. The audio out/headphone works just fine.
So I tried a known good power supply: nope. I tried a known good speaker: nope. I removed all the caps and replaced them again: nope.
I have a fear that something in the audio amp circuit went south. The problem is I don't quite know where to start looking. After close inspection, nothing on the board looks physically bad.
I got my 840AV plugged in and was having some boot issues. At that point I checked the logic board and noticed several leaking caps so I pulled it, cleaned it and recapped it. I put it all back together, sorted my boot issues, reloaded the original System 7.1 from the 840AV install media and all was well. Nice, clear, strong sound from the internal speaker.
I went and installed some of the optional installs (AV apps) and restarted. The "bong" was cut short half way through and ever since then the audio has been nearly nonexistent from the internal speaker. If you turn the volume all the way up you can hear a faint sound from the speaker. The audio out/headphone works just fine.
So I tried a known good power supply: nope. I tried a known good speaker: nope. I removed all the caps and replaced them again: nope.
I have a fear that something in the audio amp circuit went south. The problem is I don't quite know where to start looking. After close inspection, nothing on the board looks physically bad.