[TechAssist] Akai cassette deck model CS-M4 no audio out, schematic required
- From: Gary McCartney <number63@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 27 May 2002 11:59:36 -0400
This Akai cassette deck model CS-M4 has no audio output. With a signal
tracer, I only get audio into the emitter of the first transistor after
the tape head, which is TR-1 (one TR-1 transistor for each channel). The
B+ on the TR-1 transistors collectors is only 1.6V so I am suspecting my
B+ is being pulled down somewhere. I've replaced the TR-1 transistors.
I've cleaned the internal rec/ play switch and tested the continuity of
it's contacts which all checks ok. The circuit is too hard to follow on
the pcb so I need a schematic to fix this one.
Thanks for any help.
Gary McCartney
McCartney Electronics
7134 Fife Rd, RR 7
Guelph Ontario Canada N1H 6J4
Fax: (519)821-1530
email: number63@xxxxxxxxxxxxx
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