Why does my tv keep turning itself off?

SOURCE: I have a 32" HD AKAI TV that keeps turning itself off

If the service shops didn't charge people $200 to fix this I would not post.. But since they do - here's the $8 fix.

If you are electronically inclined, replace the three 1000uf 16v electrolytic capacitors in the power supply board located above the power switch. They are likely bulging out at the top and failed. They are the three in a row at the top - center of the board, located between the two black heat sinks. Make sure you get caps rated for 105c degrees! I recommend replacing them with 1000uf 25v caps. 35v caps will work but might be a tight fit as they are larger diameter.

Should cost you about $8 for the parts shipped. You can get them from partsexpress or digikey or any good local electronics store. Your local radio shack may have them but they won'y be 105c and thus may not last long.

Not handy, ask around, there is usually some electronic tweaker guy around that will install them for a few bucks.

This has solved the turns on / then off problem every time in the 3 I've done.

SOURCE: KEEPS SAYNG NOT PROGRAMMED TO WATCH NORMAL CHANNELS

Do a first time installation, move the TV or bite the bullet and either buy an external aerial or extend the main house aerial cable to reach the TV. assuming your TV has no signal where it is now

SOURCE: lg lcd tv keeps changing chanels

Come on, lets try to solve this. Take the batteries out of the remote so it can't interfere and try changing the channels and volume with the buttons on the tv. If this works then someone has spillled something onto the remote and gummed it all out. You simply need to take the remote apart and clean it out. If the buttons on the tv do th same as the remote did then yes, take it back.

SOURCE: my tv will turn on by itself also once on keeps

You probably have defective switches on the side of the television. Try leaving the switches disconnected (unplug the connector on the switch board) for a few days and see if the defect goes away. If it does, then order a new switch board.

Wale Sarumi KomputerSolution

• 6993 Answers
• Posted on Nov 12, 2011

SOURCE: My philips flat screen 42PF55 tv keeps turning itself off. The gr

Hello,

This issue is related to a power problem in as much as the TV turns off on it's own.

The problem is consistent with overheating on the power supply board of the TV. it might have worked fine in the past, but that's electronics for you. Power surge, irregular power supply, excess power supply, etc can affect the unit thereby making it to misbehave.

The power supply board of the TV has few capacitors and IC. If any of these IC's gets short or become weak, it can cause the TV to turn off on it's own.

When current passes from electric outlet to the power supply board of TV. The current also goes to the weak/faulty part, then the current stops or slow and the board overheats and TV shuts off on it's own.

To solve this issue, check the power supply board and read it with a meter and continuity tester, in order to detect the faulty part and replace the faulty part on the board which is short due to which power supply board

You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors). After replacing these capacitor(capacitors) most likely the normal operation will be restored. Or you can by a refurbished complete power board from www/shopjimmy.com to save you some stress.

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

If you don't have the ability to read the fault, then you might be needing the help of a repairman or you can call a friend that has the ability to help you out.

I wish you the best of luck.

Regards.