Well I thought I had it fixed (30V negative side) powered up in an effort to adjust offset on the D1 I/V and started checking the UBiB DC voltage. I did notice right away on that rail the LED's were a bit dimmer than the other five rails. Positive 30V supply side was fine, negative had dropped to 12V, and R1 hot, again. I've removed the PCB from it's mounts and heatsinks and measured, also check the underside for any suspect joints or shorts and see none.
For the Q's measured between Base and Collector, then Base and Emitter:
Q1: .578 .058
Q2: .424 .169
Q3: .623 .599
Q4: .335 .579
Any suggestions greatly appreciated.
For the Q's measured between Base and Collector, then Base and Emitter:
Q1: .578 .058
Q2: .424 .169
Q3: .623 .599
Q4: .335 .579
Any suggestions greatly appreciated.
