lg 42px5d wierd screen problem

[steve2k34]

i have this lg lg 42px5d and it has some wierd screen problem its al black and a slight picture in the corner but tv all works fine with sound if i can navigate in the menu to the ism menu then click white wash the screen all lights up but if you turn it of it slowly fades back to black has anyone had or know what this problem could be

its as if the screen is very slow at firing

[steve2k34]

Re: lg 42px5d wierd screen problem

found a bad fuse on z sustain will let you's no on my findings its this fuse thats gone e.t4ah250vp

is this the right fuse to get before i buy it http://www.amazon.co.uk/gp/product/B..._i=e.t4ah250vp

[tom66]

Re: lg 42px5d wierd screen problem

I had one of these sets before when it was simply dust on the Y-sustain causing the issue.

[steve2k34]

Re: lg 42px5d wierd screen problem

ive cleaned this set up as it was really thick with dust, had to change caps on power board as they were bulging this fuse is blown so hopefully when i get a new fuse it will work ok do you think maplins will stock these fuses

[tom66]

Re: lg 42px5d wierd screen problem

Yes, maplin will stock them, expect the new one to fail though.

[steve2k34]

Re: lg 42px5d wierd screen problem

Well fingers crossed it don't but if it does what ya recon the fault could be

[tom66]

Re: lg 42px5d wierd screen problem

The IPM.

[steve2k34]

Re: lg 42px5d wierd screen problem

Right I've put a new fuse in now the tv don't turn on, if I take it out it does!! The fuse does not blow its still good any other ideas what I could do to test

[tom66]

Re: lg 42px5d wierd screen problem

It means the IPM is shorted on the Z-side, so you'll need to replace it.

[steve2k34]

Re: lg 42px5d wierd screen problem

Does that mean a whole board replace or can I get the part and is it easy to replace ?

[tom66]

Re: lg 42px5d wierd screen problem

It is not easy to replace but the part is only £25 or so, whole board is typically £120 unless you can find a cracked screen TV to harvest one from. I saw a 42PX5D on my local gumtree with cracked screen a few weeks ago.

[steve2k34]

Re: lg 42px5d wierd screen problem

ill have a look around if not ill get rid of it but what part is it that needs replacing and ill look into whether id be capable of soldering it

[tom66]

Re: lg 42px5d wierd screen problem

The IPM.
https://www.youtube.com/watch?v=Y8MNQYXw8E0
Only necessary to swap the Z IPM.