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Re: HP 141T Power Supply Help Needed


 

For S&Gs, I jumpered in a set of SB520 and that brought the -12.6v output up to ~23v!? ? I went ahead and ordered 1N3209s.?

-23v is a bit concerning, but I will check the pass trans one more time and remeasure everything in the morning.? ?


On Sat, Sep 14, 2024 at 12:38?AM Bill Berzinskas via <bberzinskas=[email protected]> wrote:
Took both side panels off, dug the transistor holder out a bit more and proceeded to trace the wiring.? ?It all checks out, but I now have strong reservations about the status of CR1 and CR2.? ?I believe I am seeing?

Anode - 24v dc / 17v ac
Cathode - 0.5v DC

Assuming it should register something on my DMM, since its a diode and all..? ?Nothing.? ??
I take it these are the source of all my woes?? ? Not sure what the heck I was measuring before..??
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