NMS8280 datassette connector doesn't work!

By DaikuMaryuGaiking

Expert (70)

DaikuMaryuGaiking's picture

08-10-2019, 02:58

Ok friends!

Today is a fatal day for me!

On my NMS8280, the datassette connector no longer works. ; (
I'm sure of this because I tried the same cables on the VG8020 and it works! Crying

Motor relé and remote control works, but no audio in/out....
PLEASE!! Any suggestions?

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By Wlcracks

Champion (385)

Wlcracks's picture

09-10-2019, 07:18

First get schematics "nms8280 service manual".
Maybe no GND, because they both work but the remote does..
Oxidized din connector or bad solder joints at the pcb near the din connector?
C107 and? C104 at the same time? Most unlikely.
IC112 the buffer/inverter? (my guess)
Next would be the MSX engine, better not be that...
Good luck the nms8280 case is packed with electronics. Best use a oscilloscoop and check the signalpath from outside to inside, playing the cassette, sorry datasette lol