The tv set starts up and works normaly,but after 5 minutes more or less switches off.If I turn it on again right after,it runs for almost the same time before and switches off again.I've checked for cold solders,but I've not found
anything wrong.Could you tell the possible causes for this malfunction?
I appreciate any help I get.
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Re: tv set switches off by itself after 5 minutes
I would need model number on back to give you more exact solution. but it sounds like the voltage reulator is bad .you could get a hair dryer and put it on heat and go over board and when tv shut off that is the problem with freeze bottle you could get at radio shack you go over parts will keep it on longer good luck
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Apex TVs have parental locks that allow you to block certain
programs based on their rating. When this
feature is no longer needed and you want your TV to display all programming no
matter its rating, you must unlock your TV. Unlocking your Apex TV is done
completely from your remote control and does not require any tools. The process
takes less than 5 minutes. • Press the
"Menu" button on the remote control and use the arrow buttons to
scroll down to the "Parental Guide" option, then press the
"Enter" button. Type in the default parental code "6688" if you have not
set your own code. If you have set your own code, type it in. If you set your
own code and forgot it, override it by using "6688." Use the arrow keys to switch the parental lock to "OFF."
This allows all programs to be viewed no matter the rating. Press the
"Exit" button on the remote and start watching all your channels.
the power off is power suply problem. has static noise? some small electric internal discharge normaly once occur, has this kind of malfuntion. my advice is send to repair, normaly is HV Circuirt (Board) has lost Isolation, needs to be replaced
I have exactly the same problem with a Magnavox LCD 42", very similar model 42MF437B/37. I don't have a solution. If you unplug the TV and plug it back it starts working, sometimes for hours, sometimes for less than 5 minutes, before it turns off again. Does anyone have any real solution?
While in the Away setting, the clapper will turn on when it detects any noise over a specific threshold. After ten minutes of inactivity, it will turn off. This setting is meant as way turn on the lights as soon as you walk in the door or to startle might be intruders. If you slide the switch to Lo or Hi mode, the clapper will respond to your claps or any loud noises that sound similar. Hi is high sensitivity, for quieter rooms; Lo is low sensitivity, for louder areas.
IFyou feel confident and can locate switch mode power supply with back removed.
Try warming switchmode power supply before turning TV on.
If TV turns on normaly then there are some small capcitors that are a common cause of this fault.
Otherwise look for DRY or CRACKED solder jointson PCB
BUT DON'T do any of the above if your are not confident send it to a TV repaiman.
I had a friend with the same problem. He had to clean the components and fans in the set. The accumulated dust had caused the set to run hot and a safety switch was the tv off. He purchased a few cans of compressed air and, as he blew the components and fans out, used a vacuum to capture the blown dust. Good luck.