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My samsung 42'' lcd tv will stay on for 30-40 minutes and then shut off, 15-20 minutes later i can turn it back on a while, later it will shut down again. Could it be that something is getting hot and then cooling down?
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? 6:44
https://www.youtube.com/watch?v=OKklZpTGBGU
Apr 27, 2014 - Uploaded by Keith Fox
I demonstrate in this video how to repair a Sanyo by swap out the... the Sanyo DP47460 that I'm having an issue with. after ~ 40minutes of watching, if I attempt to change the channel or adjust the volume, the picture/screen freezes. ... After ~ 20 seconds, theTV will automatically shut off, then turn back on.
? 9:24
https://www.youtube.com/watch?v=7Rj22VNhKXg
Jun 25, 2012 - Uploaded by Tampatec
EASY HOW TO FIX SAMSUNG TV- TURNS OFF RANDOMLY Clicking ... Hi, I've got a Samsung LED TV that switches off after20 seconds and remains off. .... after about couple of minutes, is this the same problem with the tv in the video? .... 10:32. How to repair a Samsung LCD TV with a flashing standby ...
I know this is going to sound strange but I have something to check. If you have LED lights in your house turn them all off. When they are off turn on your TV and see if your TV stays on. Yes, there could be many problems but this one is cropping up quite a bit. If this does not work then you need to take a look at the power supply board.
DO NOT ATTEMPT ANY REPAIRS, CALL THE FACTORY PHONE NUMBER IN THE OWNERS MANUAL AND FIND OUT WHERE TO HAVE THE TV SERVICED, IF YOU ATTEMPT ANY REPAIRS THEY WILL VOID THE FACTORY WARRANTY. THIS IS CAUSED BY AN ELECTRICAL FAULT INSIDE THE TV, IT SHUTS DOWN AS A SAFETY FEATURE TO AVOID ANY FURTHER DAMAGE.
7 blinking
Defective Board (possibility) SC, SU, SD, P board (SC,SU,SD>D,P). Connect the connectors SC2(*2), and SC20 to the SC board. Remove the SU board. Turn the TV on. Does the TV power up and stay on IF YES REPLACED SU BOARD IF ON
Install
the SU board and
Remove the SD board. Turn the TV on. Does
it power up
and stay on? IF YES REPLACED SD BOARD
If your set was manufactured around July 2005, you may need a firmware upgrade to solve this issue. On the Sony website you can enter your model # and serial # to see if you TV is affected. If so, it is easy to have done and may be free from Sony. It sounds like the issue they described in the writeup on the required formware update. I had mine done within few months of when i bought it (purchased in Dec 2005) and it has been working flawlessly since.
I also have a Sony KDF-42WE655 42" Lcd television. We just changed the lamp (bulb) several weeks ago and has noticed that everytime we turn on the television it stays on about 30-40 seconds then cuts off. After about 15-20 seconds it cuts itself back on. Weird!! It must have something to do with changing the bulb!?!?
I have samsung 40" LCD tv and it's happening the same thing. I turned it on and it last for 5 minutes and the screen went back but the audio is fine. I turned off and turned it back on it worked fine but an hour later it happen again.
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