repair

Hi all, I recently decommissioned this X32 producer from a clients site as it had an issue where it wasn't powering up. At first I thought it could just be a loose ribbon cable as I could see power was reaching the preamps just not the main board. They clearly didn't really know how to use it as...

My M-Audio PA has blown some capacitors and resistors and I have change those without any issues. However, there are some unidentifiable smd transistors that needs to be changed as well. Anyone here that know where/how to source the schematics for the M-Audio GSR series amplifiers? Regards, David