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Old 01-08-2022, 12:54 PM   #16
Join Date: Jan 2022
City & State: Edmond, Oklahom
My Country: USA
I'm a: Knowledge Seeker
Posts: 20
Default Re: Need some help with Epson Printer Power Supply.

Originally Posted by R_J View Post
C12 is a 25v volt capacitor and you measured 165volts across it? I don't think so.
With power supply disconnected from the main board you measured the short on the MAIN BOARD correct?
Check if Q10 and Q11 are shorted, If they are not shorted, IC2 regulator may be shorted, there are a number of capacitors and ic's that connect to the +42v supply.
C12 is a 250v cap., not 25v.
Yes, I measured a short of 0.3 ohms across the +42 volt supply connections and ground.

Edit; Sorry, you are correct, I was thinking C11, not C12. Your right, it is 25v. honestly, I don't think I measured that one. Anyhow, I believe I have located the problem, but I DO thank you for your help. As you can tell, I know just enough to be dangerous!

Last edited by UglyBetty; 01-08-2022 at 01:00 PM..
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