Hi all!
I've been struggling with this TV for 2 days now and i can't seem to find the problem.
It had other issues when i got to it, first it wasn't turning on, kept blinking red light and after about 5 minutes it turned on. Once it turned on, there were big coloured vertical lines in sections on the screen. I took it apart and saw 2 bulged capacitors on the SMPS output side:
https://www.badcaps.net/forum/attach...1&d=1415359886
So i went on and replaced them. That fixed the power on issue and the vertical lines. However another issue emerged, when it had been in cold for some time then upon power on the whole screen was filled with colours on white background and loud static noise from speakers. Those lines and the static noise disappeared after about 2-5 minutes, probably due to warming up.
The image on the screen comes up ok, but the some flickering horizontal lines stayed and if listening closely to the speaker, static noise can still be heard. Also there is a buzzing sound somewhere on the SMPS board, source seems to be a relay of some sort, not entirely sure.
I'm suspecting the 450V 68uF filter cap is causing all this and since i have no equipment to test caps i'm gonna go ahead and replace that aswell, even tho it shows no signs of bulging or leaking. I also replaced all the caps on the output side.
image on screen (not entirely warmed up yet):
https://www.badcaps.net/forum/attach...1&d=1415360991
The amount of those lines decreases when it warms up, but some stay.
Any ideas? Thanks
I've been struggling with this TV for 2 days now and i can't seem to find the problem.
It had other issues when i got to it, first it wasn't turning on, kept blinking red light and after about 5 minutes it turned on. Once it turned on, there were big coloured vertical lines in sections on the screen. I took it apart and saw 2 bulged capacitors on the SMPS output side:
https://www.badcaps.net/forum/attach...1&d=1415359886
So i went on and replaced them. That fixed the power on issue and the vertical lines. However another issue emerged, when it had been in cold for some time then upon power on the whole screen was filled with colours on white background and loud static noise from speakers. Those lines and the static noise disappeared after about 2-5 minutes, probably due to warming up.
The image on the screen comes up ok, but the some flickering horizontal lines stayed and if listening closely to the speaker, static noise can still be heard. Also there is a buzzing sound somewhere on the SMPS board, source seems to be a relay of some sort, not entirely sure.
I'm suspecting the 450V 68uF filter cap is causing all this and since i have no equipment to test caps i'm gonna go ahead and replace that aswell, even tho it shows no signs of bulging or leaking. I also replaced all the caps on the output side.
image on screen (not entirely warmed up yet):
https://www.badcaps.net/forum/attach...1&d=1415360991
The amount of those lines decreases when it warms up, but some stay.
Any ideas? Thanks
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