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Old 05-14-2022, 06:10 PM   #24
Join Date: Mar 2022
City & State: Altea
My Country: Spain
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Posts: 35
Default Re: Cyberpower CP900EPFCLCD - F03 Error

Originally Posted by lotas View Post
You should have a high DC voltage on C3 - 400 V 10 uF, if it is not there, then the AC voltage does not reach the diode bridge, you need to check the fuse or low-resistance resistor, or the relay between the AC 220v input and the diode bridge did not work.
Alright, I checked the values for the BD1 component:
input AC: 0.310V
output DC: 0.403V

I also checked the cable that comes from the input AC cable (after the fuse) to see if the current was getting into the board. It has 233V, so it seems that at least until that point the current is as expected.

Using the attached picture Cyberpower04.jpg, where should I measure and which values should I expect? If you could pin-point in the picture, it will be even better, as I am a total beginner.

By the way, I always connect the battery for the tests
Attached Images
File Type: jpg Cyberpower04.jpg (167.1 KB, 10 views)
File Type: jpg Cyberpower05b.jpg (157.7 KB, 10 views)
File Type: jpg Cyberpower06.jpg (177.0 KB, 8 views)
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