Samsung Projection TV, spots?

[stusnyder]

Originally Posted by Jessica1988

About a month ago our TV went out, I replaced the projection bulb myself and it works great but we have now noticed very tiny spots on screen. If the screen has a dark scene you really see them, it looks like the stars in the sky on the screen. The ots are tiny but kind of iritating when watching TV. If anyone knows something it would be appreciated. Thanks

I think this post should be moved to the solid state forum?

[Tony V]

A friend of mine had the same thing happen to his Samsung. The DLP chip on the DMD board was failing due to heat stress from the bulb. The longer you play the tv the more spots will eventually appear. It can be replaced and is available but can run as much as $300 for a replacement. There are several links on the web that show you how to replace the chip but you will have to decide whether it is cost effective to repair or replace the tv.

[rcaman]

it is my understanding samsung will still pay for this as it is a known fault with the chip. give samsung a call and ask. steve

[earlyfilm]

Originally Posted by Jessica1988

I replaced the projection bulb myself and it works great but we have now noticed very tiny spots on screen. If the screen has a dark scene you really see them, it looks like the stars in the sky on the screen.

Interesting.

My Samsung DLP TV is now going on its eight year and I'm still on the original lamp. I'm estimating 5 hours a day , 7 days a week and the bulb has dimmed maybe 50%, but never gone out.

However, I did have to replace the color wheel two years ago, when its bearings failed. While I had the set apart, I was very unimpressed by what a lousy job Samsung had done sealing the color wheel and DLP chip, and keeping the heat away from the DLP chip. I considered cleaning everything, but decided the risk to do more harm than good was very real, so I left put everything back together without cleaning anything but the seals.

When you replaced the lamp, did you blow out the dirt? (I would advise wiping it out and not blowing it out.)

Did the lamp seat exactly as the old one did?

How much cooling air the lamp gets depends on how well it mates with the gaskets.

If the lamp is not seated correctly, correcting that may stop the damage from getting any worse, but it won't cure it.

I tend to agree that considering the price drop in large screen TVs, you would probably be better served by replacing the set than repairing it.

And, yes this post should have been in the solid state TV forum although it is a projection TV.

James.

[Daave]

Dust is my guess.

Seen this several times, after disturbing the bulb, dust gets blown on the lens assembly or the DLP chip itself and they show up as small round spots on the screen as they are not in focus.