CD 100 refurbish
Repair Early CD 100 , 1983 week 19
Won’t read TOC , Disc is spinning very very fast , The problem is that some time’s the HF signal complete disappears .
HF signal missing sometimes
Have to check CDM Board 😉
Aha, a tin jumper 😉 , Making short in HF Filter / Amp.
Bad contact in solderjoint 5 volt glue logic, causing audio to dissapear.
and one more
broken joint