The backlight on my Olevia 237 flickers all the time, it give the picture an annoying strobe light effect. I have replaced both inverters and there was no change in operation. I have replaced transistors and capacitors on the secondary side of the power supply with no change in operation. I haven't found a replacement power supply yet to try. What else is possibly causing this problem? Has anybody fixed this same problem? Thanks.
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Re: Olevia 237V S11 Backlight Problems
This sounds like a defective batch of fluorescent backlight sources; have seen this complaint before.
This may be tough to acquire since I don't know how standard those are across the industry and Olevia has filed for bankruptcy so you can't count on them.
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It sounds more like a backlight problem to me. The first thing I would try before tearing the set apart is simply unplugging it for about five minutes and plug it back in. TV's do weird things sometimes and need to be reset. Odds are, if you have to open up the TV, there's not a whole lot you can do anyway. Check the backlight on signal and also see if your inverter is working. I would suspect that if you're strobing your backlight is probably dying. In that case all you can do is replace the panel; you could try finding a replacement backlight and installing it, but I wouldn't advise even trying this. Replacing backlights is quite a task if you're not familiar with televisions. Anyway, best of luck.
Sounds like you have an LCD tv with backlight problems. Check power board for domed capacitors and replace them. next check connections on the inverter boards. they are on the sides or just one side. Becareful there is high voltage output from these boards. If the cable from inverter board is not good to the screen you can get a strobing. the inverter boards may need replaced. or cales to screen may be bad. The panel also could be bad.
I had the same problem with my 237V, I had to replace the power supply to fix the problem. I believe when it would work the output voltage of the power supply was around 19.2v. When the screen started to strobe the voltage had jumped up to 21.5V. A new power supply fixed it for me but now I think my main board is on the fritz.