Question about LG RU52SZ30 52" Television

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My tv shuts off after about amionute

My TV shuts off after about a minute. I have attempted to cheange the battery backup in the event it was the power supply. I also tried atthing an extension cord and used another outlet across the house. It's not the picture tube, since it wroks for a min, and the sound shuts off too. It's aldo not a fuse since it goes on for a min. At least to my knowledge it's not the above issues.... Any ideas?

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Re: My tv shuts off after about amionute - LG RU52SZ30 52" Television Projection Televisions

Could be a temp issue or bad cooling fan.

Posted on Jun 08, 2007

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RCA P56950 Powers on then 10 mins later powers off, repeats cycle. Then channel display in TV changes by itself

may be some thing is stuct on the controt pannel power button or others check. try this it may work

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I have a 65611 Big Screen TV. The TV shut itself off. Pressed the reset button, It flashes green then off. Pressed power again and it just shuts off. Unplugged the tv and replugged. Have a power strip...

Hello it looks like you a problem with your main board, maybe a horizanal deflection. you can get the problem by run troubleshoot codes, first hold the buttons mune and input or device until starts blinking account the blinks, it will blink few times and the it will pause for a second again will blink. get blinking number like, 2 the 2, or 2 then3. that means 22 or 23. 22 means convergance problems. feel free to call me if you need more help with your tv. 602-810-7149 i live in mesa az

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Mitsubishi 52'' TV Model WD52525

U restart the tv,u hear alots of clicking?That mean the Ballast is dead or have problems,that why ur picture lamp not sustaning the picture.Replacing the Ballast might or will sustance the picture.

May 18, 2010 | Mitsubishi WD-52525 52" Rear Projection...

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This is generally fixed by unplugging the TV for approx. 15 minutes and plugging it back in. Let it sit for about 10 more minutes and try turning it back on. Problem usually occurs after a power outage or interruption, getting the TV on a UPS or other battery backup system will help prevent the issue from happening again.

If you have already tried this then it could be that one or some of your capacitors have bulged on one of the electrical boards. This is a common problem with these TVs.

Mar 16, 2010 | Mitsubishi WD-62525 62" Rear Projection...

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Directv box went out yesterday and had it replaced today. Went to turn tv back on and it turns on for about 2 seconds then turns back off. Unplugged for about 5 minutes and still does the same thing. ...

the storm and or power surge that got your directv box got your tv also.
put in a better ground for your power outlet get a battery backup and buy a new tv.

Oct 23, 2009 | Projection Televisions

1 Answer

Tv shuts off for no reason

Good Day;

More than likely your TV has "COOLANT" (ethylene glycol) on the circuit boards. This fluid comes from the CRT's (picture tube) this fluid is used to keep the CRT's cool, such the name. This fluid from the CRT's leak when TV is on for long periods of time, the chamber expands and the seals leak.

One can remove this fluid by using "acetone" & small brush. The fluid is hard to see, use bright light, they spots can be smaller then a DIME. Also, the fluid can corrode the parts and traces on the boards. To protect the TV in future place heavy plastic or thick cardboard over affective area, make sure TV has proper air flow around TV.

If after the fluid has been removed and TV still does not work, call an Authorized Service Center to come out and repair TV after giving you an Written Estimate. The boards are not available.

Always try resetting the TV by unplugging it for one minute then plug back into A/C outlet and ALWAYS UNPLUG TV BEFORE ATTEMPTING ANY REPAIR ON THE TV.

Good Luck, big IRISH.

Oct 30, 2008 | Mitsubishi WS-65809 65" Rear Projection...

2 Answers

The tv just shut off after being on for about 5 minutes,now when trying to power on the power light flashes 4-5 times then it shuts right back off it's a 32" lcd magnavox 32mf338b

Hi Michael,

It sounds like you are having a problem with the mainboard in your TV. You could try a power drain:

1. Unplug the product's power cable so that the device is not grounded to the house. Do not simply turn off the power-bar if one is in use.
2. Press and hold in the products power button for 1 minute to release the retained electricity from the capacitors and circuit board.
3. Plug the product back into the wall outlet rather than a power-bar to rule it out of contributing to the problem and turn the device back on. If this doesn't help, the TV will likely require service. Since the TV is attempting to power on, I would say the power supply is fine otherwise you wouldn't see the LED's flashing. Good luck.

Oct 16, 2008 | Projection Televisions

2 Answers


this is the filment circuit having a problem. i think you will find it is a loose connection on a solder joint. Goodluck

Jan 16, 2008 | RCA D52W20 52" Rear Projection HDTV-Ready...

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The PT-53WX52

This looks like a problemcausing the shutdown circuit to trigger. The shutdown circuit prevents the TV from being further damaged by an overcurrent or overvoltage event. The overcurent event is caused by a component being over driven and thus it decreases in resistive value causing an increase in current, The over voltage event is caused by a component increasing in its resistive value either due to an open circuit or decrease in the component's conductive area. In any event the shutdown circuits senses these eventes and shuts the TV down to prevent futher damage.

I would suggest taking the set to your local TV repair shop.

I hope this helps,

Nov 16, 2007 | Panasonic PT-53WX52 53" Rear Projection...

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