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Light spots on DLP tv, any ideas?

Old 08-29-06, 07:09 AM
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Light spots on DLP tv, any ideas?

I've got a 52" Toshiba DLP TV that gets a couple of lighter spots in the picture just left of center of the screen. Has anyone ever seen this. I'm thinking it might be some dust on the light bulb or something like that. I can't see it all the time, but when I do it is usually in dark scenes.

Thanks in advance!
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Old 08-29-06, 07:51 AM
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Hard to say, what are you using for a screen?
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Old 08-29-06, 01:42 PM
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It's a rear projection (self contained). It's a soft,blurry lighter colored spot for lack of a better term.
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Old 08-29-06, 01:51 PM
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Originally Posted by Overpar
It's a rear projection (self contained). It's a soft,blurry lighter colored spot for lack of a better term.
Ah sorry I misread.

How old is the bulb? Do you see it on all signal sources?
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Old 08-29-06, 02:41 PM
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Do you happen to have any lights on in the room when you see these "white spots"? It is a longshot but does sound like could be some kind of reflection. When I turn my Sammy DLP off and the screen is dark, if there is a light on in the room, I get a larger white spot due to a reflection. If I recall there is something in the owners manual warning about that.
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Old 09-01-06, 06:57 PM
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I know the spots you are talking about when you leave lights on and you can see the glare. I still see spots, during dark scenes, but not all the time, but on the same scenes. Did that make any sense to anyone?! It happens when the TV is the only light in the room and when there is light in the room. Mysterious.
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Old 09-01-06, 10:49 PM
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Can rear projection DLPs get dust blubs like PJs do?
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Old 09-02-06, 11:40 PM
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RPTV can get all sorts of stuff in there, so it's at least possible. DLP isn't as likely to get dust bunnies as LCD, but it's certainly possible. It wouldn't be on the lamp itself, it would be in the light path coming out of the lamp.

In addition to reflection from outside, it could be reflection from inside the TV cabinet. One of the tweaks that crazy RPTV owners do is to buy black cloth and fasten it inside to minimize reflection. This kind of cloth is even less reflective than the flat black paint often on the inside of the cabinet.

There could also be some hotspotting going on.
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