westcoaster
Member
- Joined
- Aug 4, 2005
- Messages
- 162
Not as clever as I thought I was...
Got the lights working in the back panel on the TK-760 but in the process messed up my audio on transmit. I key up the mic, receiving radio receives a signal, I scream into the microphone but nothing comes out on the receiving radio...
By swapping various parts around using other TK-760 radios I have here, I have determined the problem to be in the head. (makes sense as that is what I was working on to restore the lights...)
First question. What is this mystery mini board? With the micro components it isn't something someone would cook up on their work bench.
red wire comes of IC 407 (voltage regulator)
Black wire goes to ground
Yelow wire to D 404 DC switch part of active filter amplifier
blue wire to C 488
Trace is cut on board between D404 and C488
Wondering if ripping this thing out would restore my audio on transmit
bit of background...
Bought this kenwood TK-760H radio for $80 on the weekend. LED's were flickering in the back of the display. Tap the radio lights start working etc. touch the LED's with a soldering iron and locate the cold solder joinnts. I also touched Q 405 abd C471...
Got the lights working in the back panel on the TK-760 but in the process messed up my audio on transmit. I key up the mic, receiving radio receives a signal, I scream into the microphone but nothing comes out on the receiving radio...
By swapping various parts around using other TK-760 radios I have here, I have determined the problem to be in the head. (makes sense as that is what I was working on to restore the lights...)
First question. What is this mystery mini board? With the micro components it isn't something someone would cook up on their work bench.
red wire comes of IC 407 (voltage regulator)
Black wire goes to ground
Yelow wire to D 404 DC switch part of active filter amplifier
blue wire to C 488
Trace is cut on board between D404 and C488
Wondering if ripping this thing out would restore my audio on transmit
bit of background...
Bought this kenwood TK-760H radio for $80 on the weekend. LED's were flickering in the back of the display. Tap the radio lights start working etc. touch the LED's with a soldering iron and locate the cold solder joinnts. I also touched Q 405 abd C471...
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