Question about LG 32LD550 32 in. LCD HDTV

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LG LCD Power Cycling issue

Hello, thanks in advance for any help, I have an LG 32DL550-UB. It is just over a year old and as luck would have it, has started giving me problems now that it's out of warranty. The TV keeps power cycling - turning off and on by itself - whenever ANY input is plugged into it and running. At first it did not happen very often, maybe once every couple of days, but now it has gotten to the point where it will not stay on at all. The TV will stay on if there is no input. For example I have a PS3 connected, and when it is off I can turn the TV on and it will not look like it has any other problems. As soon as I turn the PS3 on, it will power cycle continuously. I opened it up and there are no visible problems with the main board or the power supply. I called LG and tried a factory reset as well as a hard reset. I tried keeping it unplugged for a week, all to no avail. From doing some internet research I've read might need a new power supply, and if anyone can provide some insight it would be greatly appreciated! Thanks

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I was having the same issue and found a solution for my particular problem, so I came back here to share it with you in case it works for you, too.

My LG 32LD550 started turning off at random, then more and more frequently to the point where it just constantly turned off and on, off and on. At first it seemed to happen only when there was an HD signal (HDMI, HD TV broadcast, etc.), then it started doing it no matter what. But I noticed it also happened whenever I used the side buttons on the TV. If you're having that issue, here's what I suggest:

Remove the back panel (13 screws--11 around the perimeter, one in the center, and one on the inputs panel).
Locate the small white plug connected to the side buttons panel, and unplug it.

Sure, you won't be able to use the buttons on the TV (so don't lose your remote), but if it works, you just saved yourself a couple hundred bucks. It's worth a shot!
Here's the video I found on YouTube that tipped me off:
For me, the capacitors were fine. I just had a faulty control panel. Good luck!

Posted on Mar 12, 2013

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Posted on Jan 02, 2017

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SOURCE: LG TV not turning on

Yes you can get this fixed and it is still worth it. It may cost $200 but it should last a long time.

Posted on Nov 13, 2008

  • 187 Answers

SOURCE: how to reset lg lcd tv

Whe you press the power button the TV led have to blink several times and the it have to change to blue, meaning Tv is on.
If you press the power button and the led start blinking and goes off, then you need to replace the mainboard because it is damaged.


Posted on May 27, 2009

  • 77 Answers

SOURCE: lg tv automatically turn on and off. Power surge

the software in the main control is damaged. call your lg servicer in your area. he might get you a software update

Posted on Jul 09, 2009

  • 1099 Answers

SOURCE: Plasma Television won't turn on


A common problem for these is bad capacitors in the power supply, Remove the back from your Tv and look at the power supply on the left hand side.

You will see roughly around 9 x capacitors that are bulged / domed shaped on top usually these are valued at 3300uf 10V any that have bulged or leaked a brown like substance should be changed.
This will cure the problem as they overheat being sat next to a heatsink that gets very hot!
Try and change them for the same 3300uf but a higher voltage.

if otherwise the power supply board is faulty you can try websites, to buy a refurbish power supply board for the replacement.

Hope this helps

Posted on Jul 02, 2010

  • 679 Answers

SOURCE: I have the exact same issue as the unsolved

The power on problem is a cap in the power on circuit. The loss of signal for an areal is delayed. Nothing you can for DIY.It needs repair shop visit.

Posted on Feb 12, 2011

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