Sony TV Screen

get it fixed, call a service tech or take it in to a shop.
NO model TV stated at all just TV (HP)
HP LD5511 55"(this?) or some old plasma TV? what model is it , thanks.
on the rear is a tag that tag shows the model
first is age, how old is it and models tell me that.
the early LCD TV have back lamp that go out.
is sound dead, too? if yes, the TV has a bad internal power supply.
if sounds good but screen is dead, (use a flashlight pointed at the screen see video now (weak sure) but if seen that tells you the back lamps are burned out. (did TV screen run hot for many years )
yes, those are the ones that burn out.

here is the model prefix letter decode rules on HP TV.

• PE or PL = Plasma TV
• LC = LCD TV
• LT = Professional Flat Panel LCD TVs
• SL = MediaSmart LCD TV
• MD or ID = Rear Projection Microdisplay TV

as you can see TV means Little. lacking full model numbers.

Replace video board. That fixed mine and not hard to replace.ordered mine on e bay. Lay TV flat on something soft so not to scratch screen and remove back. A few screws and a few plug ins. Remove old card install new one. Pretty much plug and play.reinstall back cover. Done.took me about 30 minutes.

The LED light "LAMP" indication stay on or flashes in this problems?Yes,the projection lamp is the causes and problems.Change the projection lamp,should solved the problems.

When did you replaced lamp last time in tv?
If lamp has not been replaced in last 2-3 years then its time to change lamp.
Buy Sony original lamp for good picture in tv.

model # says its a 42" sounds like a rear projection lcd tv not a flat panel its your light engine sony will replace it free if its less than 5 years old

If you have a rear projection, it is the bulb. Ypou need to replace it.

I HAVE A 57" TOSHIBA REAR PROJECTION TV. HALF THE SCREEN HAS A BLUE TINT AND THE OTHER HALF IS CLEAR.

Q box needed to be replaced.

the color drive is going bad check with the sony service center it might be cover and repaired free.  my set went blue and the service tech is checking if it is covered.  good luck.

Probable bad green CRT..........usually about 600.00....T.