The tv is older. a friend gave it to me and said it worked. i hooked it up worked good for the first few days worked fine until the problem occurred. it started shutting off by itself. and it would only sometimes display the temp lamp and timer lights. they dont flicker they are on constant. wont turn the tv back on until you unplug it from the wall and plug it back in after letting it sit for a min. sometimes the tv wont do it again sometimes it does it every 20 mins to 6hrs. any ideas or tips?
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The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts. .
Posted on May 25, 2017
SOURCE: tv turns off after 45min to an hr
hi dear
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
or
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
SOURCE: picture works normal for 10 ses then turns off. (3 blinking light
Re-position the safety switch behind the lamp door and if still the same try replacing the lamp.
Posted on May 27, 2009
SOURCE: tv makes buzzing noise then picture fades and eventualy shuts off
Ur colors wheel is dead,must call tech.for this is very difficult to take out,and replaced have no tv tech. experience.Best to call tv shop service,to replaced this colors wheel,and have warrenty on it.
Posted on Jan 11, 2010
SOURCE: My Samsung HLS4666WX TV has started shutting
The lamp in the tv been in use about 1 1/2 or 2 years,the tv on about 4 or 5 hours a day?The lamp life span is over.Replaced the lamp.
Posted on May 31, 2010
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i believe the a/v slots went out. everytime i plug my ps3 into video 1 or video 2 the tv just shuts off. but leaving the a/v cord out the tv stays on. im gonna go out and by some digital cords for my ps3 and try the digital slots. will let ya know what happens.
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