I'm working on the restoration of an AKAI AM_U55. No sound and the led PCB does not work. I changed the two STK 3042 and 2155 then I ordered a TA7317 because the relay slams still not... I think that after would remain me a few transistors...
When I changed the STK 2, the relay well slammed but ca did not last long and no sound.
Someone have an idea? Thank you