My Nakamachi TA-4A: the problem was that the left channel had less sound that the righ one, so i check it and what i found...

I have a Sony UBP-X800 which not read any disc, so I need to replace the optical unit, but in the SERVICE MANUAL says that...

is there a way to get a replacement screen or digitizer? mine has the glass digitizer shattered, I talked to amazon...

Ok, so I replace the disc reader on another identical unit and it's ok, so the problem resides on the logicboard, i have been taking readings with the multimeter, the problem is that the motor that moves the laser unit back and forward through the disc is not moving at all, so i'm trying to find the bad chip that is not passing the righ voltage to that motor from the logicboard, the service manual doesnt include schematics just pics of the board circuit prints