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Vintage Tape (Audio), Cassette, Wire and Magnetic Disc Recorders and Players Open-reel tape recorders, cassette recorders, 8-track players etc.

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Old 15th May 2024, 2:02 am   #1
Libratron
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Location: San Martino di Lupari, Veneto, Italy.
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Default TC-D6C only red led

Hi at all,

i'm working on a TC-D6C with only red light and hiss from headphones.
The motor is dead no run, this is good, i have tested it out of circuit,
x'tal and autostop seem's ok. But IC601 have all wrong voltages. Q601
is good. Anyone happens this failure on a WM-D6C?

DC-DC converter working too. I want to replace IC601.

What think it?

Thanks,

Libratron
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Old 15th May 2024, 8:19 am   #2
Ted Kendall
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Default Re: TC-D6C only red led

It sounds like the unit has had reverse polarity applied at some point. This kills IC601 instantly. Replacements are very difficult to find.
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Old 15th May 2024, 8:22 am   #3
Libratron
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Default Re: TC-D6C only red led

Yep sadly :-(
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