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Old 01-07-2022, 11:40 AM   #6
R_J
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Join Date: Jun 2012
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Default Re: Need some help with Epson Printer Power Supply.

First check what voltage you are getting across C51/C52, You should have some voltage here. Next check the voltage across C12 in the primary, What is this voltage?
The power supply is always on, but in standby it should be in burst mode. so the 42v line would be low maybe around 20vdc
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