This TV had two problems. It would intermittently drop into standby mode while operating. And when the entire display area changed between scenes at once, the panel would sometimes blank out for a moment.
After dropping into standby, the TV would need to be unplugged and replugged before it would turn on again.
I opened the service menu and an error 11 was registered. The service manual says this is an "I2C error while communicating with the 2D/3D combfilter Columbus". Could that have just been from low voltage?
Then the TV wouldn't turn on at all - the relays clicked twice, the red LED showed momentarily then it clicked off.
The front LED never displayed any blink codes except for the second to last time the TV turned on the front green LED blinked infinitely.
There are no burst capacitors on the power board (a Samsung LJ44-00101B PS-424-PH Rev0.65) nor does anything there look cooked. But about 2/5ths of the caps have subtly rounded quadrants whereas the rest are totally flat on top. Is this some manufacturing variation or the result of pressure buildup? These are Samxon KMOD caps from 2005.
I tried unplugging everything from the power board except the mains power connector. It still clicked thrice. After that, it won't click at all now. Is this normal behaviour when the PSU is in isolation? Does this indicate blown fuses? Would it be dangerous to the TV to plug everything back in and try again?
I found a repair tips guide for the power board (search "Philips PS- 424-PH LJ44-00101C PSU.pdf" ) that describes how to provoke the power board to display an error code, but I don't have he necessary shorting jigs and am a bit wary of trying to connect the pins directly as they are so close together.
Could this all still be consistent with just Samwha C8059/60 failures? The power board does seem to be the root of the problem but this is unlike the difficulties it has given others.
So I'd be thankful of any tips.
After dropping into standby, the TV would need to be unplugged and replugged before it would turn on again.
I opened the service menu and an error 11 was registered. The service manual says this is an "I2C error while communicating with the 2D/3D combfilter Columbus". Could that have just been from low voltage?
Then the TV wouldn't turn on at all - the relays clicked twice, the red LED showed momentarily then it clicked off.
The front LED never displayed any blink codes except for the second to last time the TV turned on the front green LED blinked infinitely.
There are no burst capacitors on the power board (a Samsung LJ44-00101B PS-424-PH Rev0.65) nor does anything there look cooked. But about 2/5ths of the caps have subtly rounded quadrants whereas the rest are totally flat on top. Is this some manufacturing variation or the result of pressure buildup? These are Samxon KMOD caps from 2005.
I tried unplugging everything from the power board except the mains power connector. It still clicked thrice. After that, it won't click at all now. Is this normal behaviour when the PSU is in isolation? Does this indicate blown fuses? Would it be dangerous to the TV to plug everything back in and try again?
I found a repair tips guide for the power board (search "Philips PS- 424-PH LJ44-00101C PSU.pdf" ) that describes how to provoke the power board to display an error code, but I don't have he necessary shorting jigs and am a bit wary of trying to connect the pins directly as they are so close together.
Could this all still be consistent with just Samwha C8059/60 failures? The power board does seem to be the root of the problem but this is unlike the difficulties it has given others.
So I'd be thankful of any tips.
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