Shadow on LCD TV

Maybe it's a ghost or poltergeist.

Shaun

do you smoke?

No. Seems it's not uncommon, after a google, but the bad news is that the display panel and lamps are one unit.

I tried cleaning the screen with a microfibre cloth slightly dampened in holy water, and no difference, and the house isn't on a graveyard, so I think maybe not.

Poor analogue signal (deteriorating aerial signal over the years, water and ice ingress in the cable?) and use of an over the top transient improvement sharpening circuit can give these effects.

Does this happen on DVD or digital source playback?

It's there on all sources (internal freeview, internal analogue, external cable box, DVD) and looks like a static (as in non-moving) blotch on the screen-it doesn't move with any objects on the sreen.

It looks a *little* bit like when a CRT needs degaussing, but not exactly.

It's possible for LCD cells to "jam" on or off. That might be what it is. (One of my monitors where I last worked had this problem.) There is freeware that "exercises" LCD pixels to reverse this.

Nonuniform backlighting can be caused by any kind of warping of the plastic 'sandwich' construction that includes the diffusion screen. Basically, nothing short of a rebuild of the screen will undo the problem. You can try applying gentle pressure (maybe something will shift back into position) but your best bet would be to not watch the Simpsons on this TV.

Bugger. That sounds *very* likely: the shadow looks like the effect you'd have if 2 parts of the sandwich were unevenly spaced.

Maybe :-)

but your best bet would be to not watch the Simpsons

:-(

It's the only TV with cable, and the shadow is becoming noticeable on other programmes. It's slowly getting worse, I think.