Leader 718-20D/GW GPR 1820-HD Info help needed

[Potential]

I have been unable to find any schematics on the net for either or both of the following supplies, (Both are basically the same supply (made by GW)):

- Leader 718-20D
- GW (Instek) GPR 1820-HD

I'm in the process of repairing one. The only information that is available are the user manuals.
They only show the adjustment pot outlines for calibrating the units. I've tried in the past inquiring from both GW Instek and Leader. The only thing they will give out is the user manual. 

Would like to find a real schematic.

If no one has a schematic, but actually owns one of these, I need the actual part numbers of the each of the Op-Amps on the main control board. This would require someone to open theirs up and actually look. My main control board is labeled as GPR-797A-1.

Thanks in advance for any help!