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Think I just blew my power transformer

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  • #16
    Yes, check your power supply outputs. To check for shorts, you only need to measure each of those points to ground for an unexpected load. I would also check the bias supply (labeled -50V on the schematic). If you detect no shorts, replace the diodes, fire up the amp and check that voltages are similar to those listed on the schematic.
    "I took a photo of my ohm meter... It didn't help." Enzo 8/20/22

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    • #17
      Sorry to bump a necrothread, but I was going back through my trials and tribulations with this amp to remember exactly what I'd done to it and realized I'd never followed up with the final outcome. I thought it might be useful to someone Googling a similar problem- replacing the 220k resistor and rectifier diodes fixed it, and the amp's a happy camper now. I should have replaced those diodes when I did my recap in the first place, it's cheap insurance. Lesson learned.

      Thanks, everyone!

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