SR-006t Issue

[udurbalanced]

I have a CCS modded Stax SR-006t from Mjolnir Audio that stopped working back in September. For a few weeks I would get no sound until I turned it off and on, but now I get nothing. I've tried multiple sources and cables but no dice. I tested the DC offset between + and - of both channels and between the bias and both channels' - line. After that I tested the AC voltage playing a 1khz signal and followed it from the inputs to the vol control and got nothing.

Spritzer repaired it back in April of 2023. The HV- line wasn't working due to a failed resistor and a capacitor was starting to fail. At the time the left channel was much quieter and had a buzzing noise before I stopped getting sound at all. It had no issues until September or August of last year.

Any thoughts or help are appreciated. I attached some pictures of the amp. Nothing looks obviously amiss to me.

[spritzer]

What are the offset voltages?  That's when you measure between each of the 4 outputs and ground.  In theory you can have the balance at 0VDC but one output is stuck at HV+ or HV-

It is also a good idea to measure the rail voltages as the resistors in the power supplies in these love to fail.  Also... is the last cap of the main reservoir caps, closest to the tubes bulging a bit?  Might just be the reflection.