I'll let you guys know if I send it back but I'm discussing options of keeping it for a paperweight
dacman, I looked over your question the other day. The DC offset was making no difference on any signal. I did do a couple tests in the calibration section of the manual (see pic).
Step 1 voltage across C112 was good +15v, within tolerance.
Step 2 voltage across C111 was OK, -15v, slightly out of tolerance (about .1 vs. .005)
Step 3 voltage across TP1 and TP2 was negligible (in mV) - nowhere near +15v.
That's as far as I got last night thinking this unit is probably just toast adding it all up. What do you guys think, is the 145 worth fixing? It would be a good learning project that will definitely be challenging.