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poofandmook's avatar

What else happens to an LCD flat screen TV besides a burn?

Asked by poofandmook (17277points) May 23rd, 2010

I’ve seen two things happening with my 32 inch LCD Sanyo TV.

The first was a black line on the right side from watching TV in regular letterbox. The line was exactly where the black bar on the right began. Oddly enough, it never happened on the left side, and the brighter the picture was, the less you could see the line. At one point, it was about ½ an inch wide on the top and tapered down to a pinstripe at the bottom. After a little research by a friend, I stopped watching TV in that size and the line actually went away completely.

The second thing was I noticed a faint discolored bar near the bottom of the screen. After a while, I realized it was from the FF/Rewind bar on my DVR cable box. After I realized what it was from, I was very careful about not leaving something paused with the TV still on; I turn it off if I’m going to pause the cable. I also hit the exit button as soon as I can to make the bar go away again, and now the discoloration seems to be gone. I’ve noticed it start to come back if I forget and leave that bar up on the screen.

I don’t think either of these things are image burns, since they can’t be fixed, right? This TV is several years old. I don’t remember how many years ago I bought it but it’s 32 inches and when I bought it from Walmart I paid $950 for it, and they now go for under $400 if that’s any indication. Also, the TV is on a LOT. I sleep with the TV on… if I don’t leave the house on weekends it pretty much never goes off until Monday.

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11 Answers

dpworkin's avatar

I believe you have to worry about burn-in with certain Plasma HDTVs, but perhaps it is best to do as you are doing and just avoid the iisues which my cause unwanted artifacts.

mrentropy's avatar

Back in the early 80’s, the Atari 8-bit line of computers had a feature built into the ROM where if nothing was touched on the computer for a few minutes then the computer would start to cycle the colors. This was to prevent burn-in on the TV.

It’s strange that some 30 years or so later I have to worry about pausing a game on the PS3 and walking away and getting distracted for a long period of time.

Buttonstc's avatar

I do know that any type of LCD monitor (whether TV or computer) has a finite number of hours of use before it quits.

This is unlike the older bulky monitors which actually benefit from being infrequently shut on and off. It has to do more with the on/off switch mechanism.

Unfortunately, I’m also in the habit of falling asleep with my TV on instead of shutting it off. I don’t have an LCD yet and my current TV has been going strong for at least 15 years in spite of having been shut off very little during all that time.

I doubt an LCD would have lasted that long.

Sometimes the old technology ain’t so bad. At least it’s durable :)

Plus, when I do get an LCD I’ll have to deal with a seriously pissed off cat as she won’t be able to sit atop that skinny surface. Currently she loves to sit atop the TV so she can see over the AC and watch out the window to keep tabs on the squirrels and birds in the trees.

That’s HER version of tv. I love watching hermake that chattery sound when she spies a tempting juicy one Plus, she keeps the top surface nicely dusted off :)

I’ll have to get a shelf built underneath the other window, but I think shell still be annoyed.

poofandmook's avatar

Well Sanyo must have an amazingly large lifespan, because I know this thing has been tested.

vincentcent's avatar

“Burn-in” does not occur on LCD monitors. Stuck pixels do occur. Sometimes they fix themselves, so to speak. As far as the life span of a LCD monitor, that would be about 50,000 to 60,000 hours. That life would not be at full, 100% brightness. That gives you about 5. to 7 years of on time 24/7.

poofandmook's avatar

One of the things my ex read at the time when it was happening was that since it’s plasma, we could try massaging the screen gently over the area. It made it slightly wider but lighter at the top. Either way, that line is all gone now and I very very rarely watch anything in that Pix setting.. even if I have a little bit at the edges cut off because it’s zoomed in. What concerns me is the light pink bar from the DVR FF/Rewind thingie. So pesty to keep that away.

vincentcent's avatar

That almost sounds like burn in. But TV’s nowadays have a dithering pattern to prevent that problem. If it is burn-in it will show up when the TV is turned off. It may also be a conflict between the DVR and the monitor. Also there could be a setting on the DVR for menu backgrounds. Try changing that setting.

Buttonstc's avatar

@poof

Now you have totally confused me. You just said that your ex was reading about a solution “since it was plasma”.

But in the original Q you said it’s LCD. Plasma and LCD are mutually exclusive terms. It’s either or. Can’t be both. And the properties of each are quite different.

So, are you referencing two different TVs or what here?

If not, which is it ? My poor head is spinning :)

poofandmook's avatar

Um…

I guess that was my own stupidity? I was positive that it was LCD… but it’s all gushy when you press the screen. I thought it was LED and plasma that were mutually exclusive.

It’s been a really long time since I bought this TV, so I don’t remember.

vincentcent's avatar

I did some checking around. Older Plasma TVs can develop burn-in. They have eventually fixed the problem. If you run “image persistence” through Wikipedia you will get all the messy details. By the way my LCD monitor is gushy when I press it lightly. Also plasmas work on infrared light activating inert gas while LEDs are visible light. They are mutually exclusive.

poofandmook's avatar

I know it’s definitely not LED. It’s maybe 3½ – 4 years old

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