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Blonder Tongue 1526 -21 preamp power supply


Does anyone have a schematic for the above power supply?  There is -35 VDC at the output of the bridge rectifier but only -12 VDC at the F connector.  I suspect a bad zener diode.  However there are 2 diodes in series and I can read the numbers on either one.  Or do you know the numbers of the diodes?

I have been in this business so long, rocks were soft when I started.
This is CABL.com posting #393694. Tiny Link: cabl.co/mbOz4
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Re: Blonder Tongue 1526 -21 preamp power supply TSBCCC 11/12/2025 10:33:02 PM