Hey all i am pretty new to the repair scene and until yesterday i was doing pretty good but now,
After a repair to a HDMI ic chip the disc drive is not working at all anymore i dont believe it has something to do with the drive since it was working fine.
(Flat cables are all okay)
It is a SAA - 001 board, my question is what are the voltages i have yo measure from the board to the disc drive and what ar places to check.
maybe someone had this similar problen and knows where to look 
English is not my main language so spare my grammar xD