Maybe if you temporarily repair he connections to the broken transistor, the working status can be verified and readings taken, perhaps even mark those pot's positions, and when its working, twiddle them back and forth around that marked position while noting any changes in out put etc If it is actually working, you now have a baseline to which to aspire with the new part.
George Dowell _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.