Hello all, new to the forum. Quite impressed by the detailed knowledge shared on this forum. I'm a mod on a Saturn forum site so I know good from bad.....
Anyway, back to the point.
My neighbor has an AMI Rowe R85. He showed it to me and demonstrated it. It was in full working order. Chose and played correct records, both channels seemed to work (maybe I should state both front speaker sets seemed to work), volume pot on back worked, display fine.........
Shortly thereafter, my neighbor decided to dust off the electrical innards (inside he cabinet on the left with the swing up door) with a dry paintbrush.
Since that time, the jukebox functions correctly in all ways but produces no sound nor crackle nor hum. Nothing.
The 3 voltage indicator lights are lit on what I believe is the main power supply. I tried resetting the circuit breaker anyway -- no change.
Noticing the next board had an "Ext. Speakers" Wiring harness attached to it I inspected it and found 3 wires disconnected ---presumably from the board terminals (see pic)----red, brown, and the "pink".
I found this odd for two reasons: I can't see three terminals being that loose that a paintbrush would knock three wires off. Also, there is currently nothing connected to the terminals on the board labeled "L Channel"(left) so they would all have to have come from the same place.
I find it hard to believe that even with these three wires disconnected, even the right channel wouldn't play.
1) Could someone please provide me with the correct terminal/wire connections for the left and right speaker portions of this board, and what the terminals correspond to? What voltages should I expect to see at these terminals?
I also tried resetting the circuit breaker on the 130 W amp. No effect.
I checked the resistance of the volume pot (10K) and it operates smoothly.
I've also noticed that the amplifier does not seem to give off any heat from those ginormous heatsinks. I know that being that size, they will take a while to heat up, but I feel nothing.
I did not yet check the voltage coming out of the 120V plug into which the amp is plugged in as I am already troubleshooting in three directions and thought I should call a time out and ask for some expert advice.
My gut feeling is that this is something on a higher (systematic) level (rather simple) that has been disturbed. For example, cold solder joint on the volume pot? tugged n wiggled but no sound. What voltage should I expect to see across the pot?
Any suggestions of what to check would be much appreciated.
Note that I am flying blind (no service manual, no schematics), but I have a reasonably strong electronics background, can read and understand schematics, and I solder just well enough to make the connection.
Thanks in advance for your help.