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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HI. If you are 100% sure that no timer is active, then I guess it is a thermal problem in the TV. There can be bad solderings, mostly in the horiz., or vertical powerstages, causing the TV to shut down after 5 hours. At least, this time should be different if the ambient t° from the set is higher or lower. If the "turn off" time is always exactly 300 minutes, no second more or less, then there might still be a processor problem in the TV. Not easy to find. Also, these replacement micro-processors contain a
pre-programmed booting section where all characteristics and alignment data from your set are stored as a factory setting....
Huge problem, which can only be solved by an Audiosonic service center. Good luck.
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.
Just reset your tv to factory settings. By doing this all the settings will be set to its orginal factory mode, and you have to reset all the settings including V-Chip settngs. To set it to factory settings do the following.
Switch off the TV wiith its front panel power ON-OFF switch and wait for about 5 minutes.
1 Press POWER to turn on the TV.
2 Hold down RESET on the remote control.
3 Press TV POWER on the TV. (The TV will turn itself off, then back
I do not knowtis make , but this type of fault is sometimes due to dry joints in the flyback circuit or power supply try resoldering all pins on flyback transformer and chopper transformer, also cheek that the ht voltage is as the makers state. Waring unplug from mains before removing back and discharge ht resiour capacitor before starting repair
You have problems with a condenser that allow the power supply to maintan an acceptable level of voltage in order to keep the TV on. take to a tech to be fixed. unfortunatelly, this problem needs a tech to take measures in the circuitry to find the component that causes the problem.
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.
Sometims several capacitors start going bad giving you the audio problem, but I don't remember the set turning itself off. That could be a secondary problem around the flyback transformer which may have a bad solder connection. I would check that first. Otherwise, I would be tempted to go with HDTV.