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Old 01-06-2022, 05:41 PM   #2
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Join Date: Jun 2012
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Default Re: Need some help with Epson Printer Power Supply.

R12 (0.3Ω) is likely good, you were also measuring the meter leads resistance.
I have tried doing some initial testing with the supply removed and could not really tell much as I was not able to get it out of stand-by mode. The fuse is good and I'm getting power into and out of the rectifier.
There is more than one rectifier, which one are you talking about?

One thing I have discovered, if I reconnect the supply to the processor board, I hear sort of a high-pitched "beep" sound from the supply
There could be something shorted on the processor board.

Last edited by R_J; 01-06-2022 at 05:50 PM..
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