Is my Sony Bravia LCD 46" showing signs of upcoming death?

[Supra_Freak]

Last night for the first time ever i noticed 2 lines going down the left side of my tv (very VERY skinny lines but stil big enough to notice when sitting on a couch 10 feet away.

I was able to "bang" them out by tapping the top of the tv above the 2 lines and they did eventually go away after a few bangs (not before changing color first).

They went away for the remainder of me watching the tv, then i turned it off for about 30-40 min, came back to it and then a few min after i turned it on they came back.

Again i proceeded to bang the top of the tv (not too hard), and eventually they did come out after a few hits and stayed out for the last 4-5 hours i had the tv on still.

I haven't checked it today but this is starting to scare me. My g/f and i paid $2200 for this tv over a year ago (its actually only a few months past its warranty, about 3 actually). Either way we paid some damn good money for what was supposed to be a close to top end Sony tv and now this crap is happening.

So A. Whats causing this to happen? B. Can i fix it with something as easy as blowing dust/possible cat hair out of the top/back of it? and C. Is this a sign that im gonna have future problems down the road?

Thanks

Edit 2: I should also add to the fact that i have never EVER had the tv turned on when there has been a storm going on outside (im also in an apartment building). And i have never had the tv on when the power has just went out all of a sudden (thats only happened like maybe 3 or 4 times over the course of the year ive had it and that's only been twice in the middle of the night while sleeping and once or twice during a storm but ive always had the tv off to begin with. So its not a matter of the tv getting fried from power outage or surge but i am finally picking up a UPS battery backup for it today.

Edit: Ok the link to a tv i posted earlier was the wrong one, the model i have is a Sony Bravia 46" LCD KDL-46S4100. Annnnd ive been doing some reading and found out that this specific model is also one of there lower end ones apparently which i had no idea was the case considering i paid $1700+ tax for the damn thing... Guess i should have gotten extended warranty because when i came home 3 lines showed up, but after some banging on the top i was able to get rid of them and after i do that they NEVER come back until i turn the tv off then back on again.

[Supra_Freak]

Nobody? seriously?

[caveman-jim]

The gubbins is messed up. I'd say keep using it for as long as you can.

Did you buy it on a credit card or pay cash?

[Supra_Freak]

I got it from The Brick on a don't pay for 15 months plan, which meant i had to get a Brick credit card to do it.

[Supra_Freak]

Well my tv is still making the lines down the screen but i tried something new last night when i got home.

I turned it on (cold start up), 3 lines showed up. Tried a quick couple taps on the top of the tv and they didn't go away. So i let it sit turned on and after about roughly 10 min or so (maybe not even), they went away on there own after it warmed up.

[Zero]

I'd stop banging on the tv as a solution.

Also call up the brick/sony and see if there's anything they can do out of warranty. At the very least they can direct you to an authorized repair place.

[Supra_Freak]

I'll probably end up calling Sony to see what they can do. And yeah i stopped hitting the top of the tv cause i found out that if i just let it sit here and warm up that the 3 lines will go away one by one on there own after any where's from 10-15 min (so basically once the tv warms up).