Question about Samsung HLM5065W 50" Rear Projection HDTV-Ready Television
Hello there, My tv turns off by itself after viewing for about an hr. It starts to scramble flashing white lights across the screen. then turns off. i have to unplug it for a few mins...then turn it back on. after doing this it shuts off again. This time within mins. I've replaced the bulb,hoping it would solve problem ,but to no avail. Please HELP. Best Regards
it may be a power supply issue; if a tube (standard definition) then get of ck’d out but if it’s an HD of any kind it may be the resolution setting due to the fact that DVD players are essentially sending a standard def signal 480p while the monitor is looking for a High Def signal 720p or 1080i or 1080p are the three main settings; as metioned previously disconnect the sources (player decks)?and see if the monitor turns in then un the settings you can check the resolution
It is the protection circuit cutting in and shutting off the set. This is because it detected a short or near-short circuit somewhere within the 8 or 10 sections of the set. Most common is high voltage, deflection amplifiers and main power supply.
You must know how to troubleshoot the circuit and systems in order to repair these kinds of set. You can get lucky, sometimes, by just probing around looking for something that does not look right.
If you are an electronics technician with some good skills I can give you better advice, but if not, you are better off seeking professionial help.
If you want more assistance, I must know the model number and the age of the set. Then I can give you some further ideas.
Also, Allan Wainwright, one of the best allexperts, is good at guiding you on these kinds of things.
Finally, if the set is over 3 or 4 years of age it is not a good candidate for repairs. Why? because it will just fail again, and again, and soon you will have spent so much time and aggravation you will have wished to have cut the losses and just replace it. Sorry, but that is the nature of tv sets once they start to fail.
Posted on Mar 26, 2008
Initially and sorry but I have to ask, you of course have verified that the Sleep Timer is OFF?
Additionally, it would seem that the unit's problem is either heat related or a cold solder/loose connection. I would discount the possibility of a defective component since if it so then the unit would not even power up in the first place.
Pls post back if you are considering of doing the diagnosis and possible repairs yourself. Should you venture a DIY, pls be reminded of safety precautions when working with electrical devices. Of course this would also require a bit of familiarity with electronic components and circuitry, use of a DVM and a soldering iron. Access to a service manual or at least a schematic diagram with voltage measurements would make the diagnosis a lot easier. If you are not comfortable going this route, then perhaps your best bet would then be to seek the services of a qualified professional.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards.
Thank you for using FixYa.
Posted on Mar 26, 2008
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Posted on Jan 02, 2017
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