Proscan service manual

[george beard]

I work at ACE TV in Las Vegas,NV I need the signal board secondary power supply schematic. Voltage to the collector of the 3 transistors
(ECG 152) , 5v, etc. is there from the low voltage switch power supply. Without the 5v to the eprom and micro processor the model # PS 606082 will not start up. The eprom is not shorted. No obvious part failures.
The chassis # is CTC 170AC, PTK 171 ACC, (1994). Andrews Elec. says no longer available. This chassis basic design is very sismilar to CTC 169 I have many manuals and parts for, I have never failed to fix many of these. This is the second CTC 170 I have worked on. Any help, tips?