42LG3000 Screen Fault

[quiggy]

So while I'm waiting on my Panasonic caps to arrive I decided to start my other project a Sanyo, which was nice and easy and is working! yay so I move on to this and here I am again.

I can't really explain this fault but I do have pictures to follow, when I first got it, the back light came on and instantly dimmed, like it was power saving it seems to be a built in feature for when it's idle but after a short while of leaving it blank, white started filling the screen from around the sides and top and bottom. This is one of 3 things it seems to do, if it's not this then the screen does come on, but the image is like scrolling in-between horizontal lines (the picture will clear this up) the third thing it will do if it's none of the above is, it will work perfectly fine and run for hours with no issue, can turn it on and off and it will come straight on, cold starts, no problem so I can't find the trigger either.

I read elsewhere that the T-con board is the fault?

Thanks.

[quiggy]

Re: 42LG3000 Screen Fault

Nobody any ideas on this one?

[tom66]

Re: 42LG3000 Screen Fault

Could be loose LVDS.

Panel is a distinct possibility (LCD itself) - known issue with these models is a tab bonding failure.

[quiggy]

Re: 42LG3000 Screen Fault

I guess if it's the panel it's not repairable? I know replacing it isn't an option.

[tom66]

Re: 42LG3000 Screen Fault

If it is the panel, it would be impossible to repair (aside from screen replacement, not worth it.)

[vinceroger69]

Re: 42LG3000 Screen Fault

Ive saw this same fault too on a freebie set i picked up i just sold all good parts on ebay inc stand.

[nomoresonys]

Re: 42LG3000 Screen Fault

I'd try a tcon, if you get a good 1 and it does the exact same thing, at least you ruled the tcon out, and they're not too expensive.

[quiggy]

Re: 42LG3000 Screen Fault

I was toying with the idea of a t-con replacement just to see. I'll price one up and see if it's not too bad I may try it.

[quiggy]

Re: 42LG3000 Screen Fault

I decided to just use it as it is, I worked out that if I just give it a bang at the back when the screen goes, it comes back on. Bigger than my current TV and I can live with giving it a tap every now and again!

[tom66]

Re: 42LG3000 Screen Fault

Sounds like a tab bond fault. It may be fixable. Eventually tapping will stop working though, so I wouldn't just get rid of your old TV just yet...

[quiggy]

Re: 42LG3000 Screen Fault

I'm all for it being fixable, so far it's not done it since but I'm sure it'll come back. What is it that needs repairing?

[quiggy]

Re: 42LG3000 Screen Fault

Since posting that about 10 minutes ago, it did it again but it seemed that it turned itself on too, is that common with the same fault?