Samsung SyncMaster 2333HD flickers when warmed up.
I have an old SyncMaster 2333HD (manufactured in March 2009) that is flickering around the edges of the display at a constant rate. Closest comparison I can think of is a CRT with a low refresh rate. This makes the display nearly unusable without giving me a headache. It starts after the display has been running for 15+ minutes usually but when the monitor is freshly powered on after cooling down it is fine. I have attempted to reset it, try a different DVI cable, plug it directly into my computer (it is using a DisplayLink adapter since my Mac only supports 1 external monitor) and even taking it apart and reseating all connectors. It initially started with just the top of the display but it has gone down to the bottom also. Is this the CCFL backlighting going out?
Edit: Images
Thank you.
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5 commentaires
@thequacker your Syncmaster should actually have an LED backlight. Does this behavior change if you decrease the brightness? Pop the back cover off and see if there are any obvious issues. this sounds like bad caps or bad FET. Get some freeze spray and apply that one the components on your board. See if you can determine which part creates this. You know the drill :-) post some pictures with your question so we can see what you see.
par oldturkey03
@oldturkey03 Thanks for the response. The flickering does not appear to change with brightness, just becomes dimmer. I will disassemble it to see if there are any bulging/leaking caps or anything out of the ordinary. From what I could find online the display is said to be CCFL (https://www.cnet.com/reviews/samsung-syn...) but I am not sure.
par Duck
@thequacker once you have the back off and post some images we'll know more about it. It's a good monitor and definitely not ready for the boneyard
par oldturkey03
@oldturkey03 @jayeff I have added some images.
par Duck
@thequacker Awesome. thanks. Yes, you and @jayeff are right. It's a CCFL backlight. So it could be your CCFL's but I would also not rule out the inverters transformer circuitry on your power board. I'd check the capacitors and/or replace them with some quality caps. If nothing else it'll be inexpensive and could yield results.
par oldturkey03