Backlight works when you first turn on the set, then it goes on and off a few times (backlight only, not the TV) and then picture goes out altogether; however, there is sound. I have already changed the power inverter board on the right side (facing the back of the TV and it still happens. Any suggestions?
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Take the back of the TV off. take the power sores out and put a new power sores in.
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SOURCE: samsung tv turning off by itself
I had a similar problem where my 61" Samsung DLP was turning itself off very frequently I had resolved to try replacing the bulb. I called a local TV repair place to see if they had my buld in stock. The guy I spoke to actually told me how to fix my problem! There is a little blue switch behind the bulb access door. The inside of the door has a little piece that presses the switch down. The switch is supposed to work correctly weather the switch is in the up or down position but samsung forgot to take expansion from heat into account. If the switch is held in the upper position by the door and the plastic expands to a certain point, it triggers the set to shut off. This does not occur of the switch is held in the lower position. What you need to do is take the access door off and put it back on by sliding it into position from above. That will hold the switch in the down position, eliminating the problem. My set has not **** itself off ever since.
SOURCE: where is the backlight inverter located
It's a really long and narrow board and are usually a pair on both the far left or far right side of the panel.
Check the transistor like components to make sure they are not shorted internally to ground. That's a very common issue.
An easy way to recognize, it will have many black rectangle transformers all lined up in a row top to bottom. They measure about 1.5inch x 1inch but vary with each model.
SOURCE: Samsunb 4051: TV screen turns off sound stays on.
Most likely this set has an "integrated" inverter, as most samsungs do--and this DOES sound like an inverter problem. Make SURE thought, there are no more bad "10 volt" caps on the power supply...ALL of them need to be replaced no matter HOW they look.
SOURCE: One day I turned my tv off and it wouldn't turn
The power board is the usual culprit but I have also seen the main board, T/Con board or the panel itself cause this problem. I would recomend calling a trained tech to figure out the problem. You could spend hundreds of dollars on parts and still not fix it. You can call 1-800-samsung to find nearest service center.
SOURCE: I have a Samsung ln
I have a 46" Samsung LNT4665 with the same problem. Originally had the power supply replaced but 1 day later I have this problem. Auth. repair shop says it's likely inverter, but apparently can't be replaced separately, must be replaced with panel ($700 , and labour on top) might as well buy a new TV.
Any suggestions? I have seen the inverter sold separetly on some websites, anybody try replacing that part?
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