EDIT: problem solved by resoldering some point around CP601 amplifier. Good afternoon, I am currently working on a WM-D6 (not C), I repaired CP602 by replacing the NPN transistor and the FET, unfortunately the IC20024 was also defective, but I still had it in reserve. The DC-DC converter was also blown. I also replaced the mute module, EQ switching modules and CP601 amplifier. The result is that the device sounds great in playback. However, recording does not work. After connecting the microphone, I can hear the sound through the headphones, but nothing is recorded on the cassette. S301 has been cleaned. I also checked the wires to the tapehead en on the board. Does anyone have an idea what it could be. Thank you very much.
