No schematic exists so give up any search.
Anyway as a follow up to this dead 6 year old post.....and to try and regain some lost history under my forum name due to getting hacked and starting over. If anything its good reading right.
Originally it didn't key up due to a bad keying transistor. Such an easy fix. The preamp transistor also needed replacing. Even though it worked ok, eventually I went through it all and this is what I did....
I replaced all the white square chicklet gum sized caps which were swollen, to dipped 0.1uf(104)1kv's, and added feed back circuits to the 4 pill section, and to the driver section mounted to the cover, which is not shown in the pic.
Beefed up the power coming in through that ground strap with a bunch of solder and by adding a piece of 12g copper wire( i know it looks a mess but it works), and also replaced the frayed red power wire with 14g Teflon wire to power the driver.
The Mylar caps on the input transformers were iffy so I replaced those as well.
Added a 12v light bulb to unkey the TX relay quicker by depleting the stored energy holding the relay closed. Short delay on the panel switch wasn't short enough.
Fresh heatsink compound under each transistor. Added a 120mm fan, doubled up the power wires with dual 10g for + and -, and called it a day.
Its a cool amp, and does about 550-600pep(on a Swan WM3000) and has a SSB bias circuit.
If anyone has the specs for these old TRW PT9849 or PT8854 transistors let me know.