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Old 01-21-2018, 01:51 PM   #67
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Join Date: Dec 2017
City & State: Groningen
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Default Re: A guide on how to troubleshoot 2 seconds to black

Don't wanna hijack anything here in the topic, but I'm wondering how likely it is to have a bad high voltage cap. I have a topic here:

I'ts a bout a LG monitor with CCFL backlights, and the backlight goes off after ~ 3 seconds, while the image and everything stays perfectly on (of course only visible with a flashlight). I already replaced the regular caps, but it didn't change anything. So I was thinking about replacing the big capacitor (120F 450V). However in the Cap kits you can buy for monitors I never see the big capacitor being in the kit, nor did I see anything here in the troubleshoot topic mentioning the big cap.

Is this thing likely to fail, or is that very rarely the case?
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