My new TV has 3 dead pixels...

Oh Boy !!!

And, the replacement may have 4 dead pixels and might have other problems. For a CRT, they aren't actually pixels but probably a shadowmask dot. There is a specifications for this.

--- sam | Sci.Electronics.Repair FAQ:

Repair | Main Table of Contents:

+Lasers | Sam's Laser FAQ: | Mirror Sites:

Important: Anything sent to the email address in the message header above is ignored unless my full name is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs.

Odds are that you will not even be able to get any kind of warranty or exchange for a whole 3 dead pixels. Contact the manufacture about the defective pixel policy on lcd screen.

Basically, no, it is not worth trying to take it back for only 3 dead pixels. Manufacturing tolerance is many more bad pixels than just three.

Odd, I've never seen dead pixels on a CRT, must be some debris in the shadow mask, or holes that didn't get fully etched. It's very unlikely for more to develop, if it doesn't bother you just leave it alone, if it does, you may be able to return it but it might not be worth the effort. Personally I think the dead pixels would drive me nuts if they're in the center portion of the screen, around the edges or corners I wouldn't care as much.

--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"

"Follow The Money"

Never heard of dead pixels in a CRT. You sure you don't mean LCD? Or a differnt symptom? If the store won't take it back for a few bad pixels, will they take it back if it's dead? If so, it may be time to commit electronic homicide to get your set replaced

I used to see this occasionally in minor brand CRT monitors.

I have a Sears-Sanyo TV made in the 1970s whose Hitachi CRT is still bright and sharp, but from day one it's shown a small white dot, about

1" from the right edge, whenever the screen is blue in that area. I decided to ask Sears about this defect 12 years after the purchase, and they issued a $50 refund check without protest.

There's one nearish to the middle, and a couple in the left area of the screen. None are near each other. To be honest, you really don't notice them. I was just concerned that more might go out. But I've learnt that they're not actual pixels on CRT televisions! But like you said, just holes - So like you said, it sounds like there won't be anymore!

One other thing I have noticed with my new TV is when viewing pictures, it looks fine. But, if a light image comes into the picture, the whole screen seems to darken down a touch. Not a lot, but if you're watching a moving picture where something light is coming in and out of the picture fast (Like someone walking down a corridor), the whole screen has a slight flickering effect. Also, pressing the TV info button, to get the information banner up, the sane thing happens. Like I said, it's very slight, but once you notice it, it's annoying! Any ideas? It's something I can easily live with, but I've not seen it on previous TV's I've had in the past!

Matthew Long

My current set has two; one appears to be missing its phosphor, the other is hard to see.

I got a service call years ago to replace a CRT on a brand-new set. This one had one missing phosphor dot, *right in the center*. Any time a person's face was in the middle of the screen, this pixel was a spot on the person's nose.

--
        If John McCain gets the 2008 Republican Presidential nomination,
           my vote for President will be a write-in for Jiang Zemin.

How high is the contrast/picture set? Most TVs come from the store with it set to maximum. At this setting, bright objects will overload the power supply and cause the picture to dim, bend, or become blurry.

40-60% of maximum is usually about right. The TV will also last longer with the picture at a reasonable level. Andy Cuffe

snipped-for-privacy@psu.edu

That one sounds like screen burn, I've seen it a few times when deflection stopped but the beam was not killed immediately for one reason or another.