JCM 2000 DSL 100 ISS 5 - That Won't Hold A Bias - Change Diodes?

[g1]

Sounds like the old OT was wired with reverse phase giving positive feedback instead of negative. I would try it again with the OT primary leads reversed.

[Jecarroll7]

I posted the entry then looked at the schematic and realized the OT leads were reversed.

Well, I know what positive feedback sounds like now.

Thanks g-one and everyone else that responded for your help.