Need tech advice reviving Tascam 38

  • Thread starter Thread starter johnsig
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johnsig

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While I was working on getting my "new" Tascam 38 working (no output on two channels, probably because of cracked motherboard solder) all of a sudden ALL of the audio stopped working on ALL 8 channels: VU meters would light up and jog on switch-on, but would not budge either with input signals or while playing back a recorded tape. No audio is recorded, and no sound is output. Nada. Tape transport continues to work perfectly, though. I went in and checked all the fuses, and they were fine. I also checked the voltages coming off the power supply, and they seem okay, with 24V on pin 8 of P171, +15V on pin 9, and -15V on pin 10. I also swapped out one play/rec board with a spare I know to be good, but still nothing. If you have any suggestions as to what I should check next, please let me know; otherwise I guess I'll have to take it to a real tech.
 
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