I still need to buy a component tester (something like M328) so I can actually measure the caps. Later on I discovered that there was another cap, which I forgot. I added a picture of which cap I replaced. The DVR1604HF-U-E Hybrid DVR is an excellent digital monitor product designed. With only the bottom CCFL connected the screen still goes off, but the red power led stays on. Detailed instruction manual and user guide of exploitation for LG W2246S-BF computer. Later on I tried to also remove the bottom CCFL connectors (so no CCFL attached anymore) now the monitor does stay on, however you obviously don't have an image (I used a flash light, and then I see the screen still being on). With those two disabled the high pitch noise was gone, however the thing still turns off after a few seconds, exactly the same. I tried something else, and plugged out the upper CCFL connectors (one with red color wire and one with blue color wire). I already opened the thing and replaced some of the caps, but unfortunately still the same issue. Someone gave me a LG Flatron W2243S-PF monitor which turns off after a few seconds and while it is on it makes a high frequency noise. I finally decided to register here as I wanted to improve my knowledge of electronics repair.
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