LG 42LE4500 No display

[thoma]

Re: LG 42LE4500 No display

http://www.electronica-pt.com/esquem...artdown/25596/

schematic available

regards thoma!

[katanka]

Re: LG 42LE4500 No display

Hello,

i have the same problem with my TV LG 42LE4500.
The TV powers ON ( with switch or remote), Red light animation during several seconds and after white light.
When i use the remote, white light flashes.

Black screen and no sound during all of this

[newtothis]

Re: LG 42LE4500 No display

If you can get the LED strips

It is not an easy thing to do though, There is the chance of damaging the panel while attempting it.

[EkoPT]

Re: LG 42LE4500 No display

If you already replaced it you can be pretty sure its the LED's

Its fixable?

[newtothis]

Re: LG 42LE4500 No display

If you already replaced it you can be pretty sure its the LED's

[EkoPT]

Re: LG 42LE4500 No display

I never repaired it, Was a bad LED strip

How can i confirm if the new PSU is in good conditions?
Its possible the problem is somewhere else?

[newtothis]

Re: LG 42LE4500 No display

I never repaired it, Was a bad LED strip

[EkoPT]

Re: LG 42LE4500 No display

I have now done a fair few of these and only once has a PSU replacement not remedied the problem.

Hi.

How did you repair that one?
I had the same exact issue, replaced the PSU but the problem remains.
TV on, 2 seconds later, black screen.

[newtothis]

Re: LG 42LE4500 No display

I have now done a fair few of these and only once has a PSU replacement not remedied the problem.

[Honacloi]

Re: LG 42LE4500 No display

Do you have a backlight or not? You haven't mentioned if you do.

There is no backlight Tom, that's why I said black - I'd have mentioned if it was glowing as I know the difference.

[newtothis]

Re: LG 42LE4500 No display

Do you have a backlight or not? You haven't mentioned if you do.

If experience has anything to do with it Tom you can assume it doesn't. LED driver always goes bad on these PSU's for some reason.

Obviously wait for their reply but I know what my bets are on

[tom66]

Re: LG 42LE4500 No display

Erm... Thanks Tom. Alas I'm a little puzzled what that has to do with my question. It wasn't caused by water damage.

Do you have a backlight or not? You haven't mentioned if you do.

[newtothis]

Re: LG 42LE4500 No display

The PSU has the LED driver built in, Its that little green board attached to the PSU.

The PSU's in these sets are prone to failure and are not easy to repair and costly to replace... I have had a few LE models come to me in the last 18 months.

Let me guess... The LG logo comes up then goes off and loses backlighting?... still have an image via flashlight test? If so yes PSU

[Honacloi]

Re: LG 42LE4500 No display

Erm... Thanks Tom. Alas I'm a little puzzled what that has to do with my question. It wasn't caused by water damage.

[tom66]

Re: LG 42LE4500 No display

I've had water damage kill a 37LE4500, the T-con was shorted due to shorted LCD panel.

[Honacloi]

Re: LG 42LE4500 No display

Has anyone ever fixed this problem? Was it the PSU?

I have a 42LE4500 that now has a black screen with sound.

In a traditional LCD TV I would just replace the inverter but this set doesn't appear to have one. So does the PSU also act as the inverter in this case?

[newtothis]

Re: LG 42LE4500 No display

Voltages from PSU?

[Maddoga1]

Re: LG 42LE4500 No display

LG 42LE4500 Keeps restarting with a click from the main board

My one works fine but turns it self off after about 5 mins and restarts over again and the keep restarting . Does anyone now that I should check first based on this fault

[scooter13uk]

Re: LG 42LE4500 No display

Manual - http://servicemanuals.pro/serviceman...inish.html?m=0

[scooter13uk]

Re: LG 42LE4500 No display

Hi,

I know this an old post, but did anyone manage to get a fix for TV? Have same problem.

Scott.