Re: Samsung LE40A536 - constantly restarting
New board arrived.
Just for shits and giggles I tried to fire it up one last time with the old buggy mainboard.
It turned on and stayed on :O But all the settings were totally messed up. Contrast, color, sharpness... all of it was set to 255 out of 100, the image was all green and all kinds of weird things. Reset it to default and it worked okay for half an hour... till I turned the set off and back on... tadah! 15sec restart bullshit again.. figures.
Put the new board in and first thing I noticed is that it doesn't turn on on its own as soon as you plug the AC cord in. Works flawlessly so far, but man does the PSU/Inverter board run HOT..
Burned my fingers on the heatsinks.. I guess I'll have to cut a hole in the back cover and add a 92-120mm fan on switched 5V blowing down onto the PSU or something like that..
Kinda stupid design. The casing has vents over the whole width of the TV at the top, but at the bottom there are 2 vent grilles on the right and left side. The powersupply board is in the center, and that's exactly where there are no vent holes whatsoever, because that's where the stand mounts. There's no direct "airflow" for convection cooling. Brilliant.
But yeah. New mainboard and it works flawlessly so far, including when I turn it off and back on again. The new board doesn't seem to have any signs of repairwork done to it (I was looking especially at the 256KBit EEPROM. All factory still..).
New board arrived.
Just for shits and giggles I tried to fire it up one last time with the old buggy mainboard.
It turned on and stayed on :O But all the settings were totally messed up. Contrast, color, sharpness... all of it was set to 255 out of 100, the image was all green and all kinds of weird things. Reset it to default and it worked okay for half an hour... till I turned the set off and back on... tadah! 15sec restart bullshit again.. figures.
Put the new board in and first thing I noticed is that it doesn't turn on on its own as soon as you plug the AC cord in. Works flawlessly so far, but man does the PSU/Inverter board run HOT..
Burned my fingers on the heatsinks.. I guess I'll have to cut a hole in the back cover and add a 92-120mm fan on switched 5V blowing down onto the PSU or something like that..
Kinda stupid design. The casing has vents over the whole width of the TV at the top, but at the bottom there are 2 vent grilles on the right and left side. The powersupply board is in the center, and that's exactly where there are no vent holes whatsoever, because that's where the stand mounts. There's no direct "airflow" for convection cooling. Brilliant.
But yeah. New mainboard and it works flawlessly so far, including when I turn it off and back on again. The new board doesn't seem to have any signs of repairwork done to it (I was looking especially at the 256KBit EEPROM. All factory still..).
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