Building your own projection tv

[Spicker]

i did say

but hows the quality?

good?bad?amazing?horrible?

[Santa]

Remember boyz n gurls that should you ever buy a video projector that the light bulbs are extreeeeeemly expensive and only last a certain amount of hours.
I am certain the sales person does not mention this small item
500escudos ++

[GepperRankins]

i did say

but hows the quality?

good?bad?amazing?horrible?

weird.


i can't get it focus perfect everywhere so i gotta find a sort of balance of good enough in the middle and ok at the edges. two odd things about the TFT though; 1 - there's a certain shade of black that causes neon blue ghosting. 2 - colours appear to run into eachother. i think i know why the colours run but anyone know why the ghosting happens.


*ghosting means there's either blue where another colour should be or about 5 pixels to the right

[GepperRankins]

Remember boyz n gurls that should you ever buy a video projector that the light bulbs are extreeeeeemly expensive and only last a certain amount of hours.
I am certain the sales person does not mention this small item
500escudos ++

i think my bulb is available 4 for £20 on ebay

[tracydani]

For the focusing, how far away is your monitor from the glass surface of the projector? Is there room to play bringing it closer without worrying about cooking the lcd? Maybe even lift it a little higher?

I have read that some monitors bleed light, maybe that is causing the color problems. I will see if I can find the solution that was used and post it. I think it had something to do with a program that changes how the monitor distributes whatever makes the colors. Makes them somehow denser in the distribution or something.

The ghosting is usually caused by too slow of a response time in your lcd. They seem to recomend mid 20's or lower, preferably under 16ms I think.

Either way, now all you gotta do is tweak. Good luck

PS, what is your lcd model? I will look and see if they have anything posted about it.

[Santa]

i think my bulb is available 4 for £20 on ebay

you lucky bastard i payed 550 dollares for mine
but then again i paid 75 dollares for the machine
never pay for filesharing!

[tracydani]

i think my bulb is available 4 for £20 on ebay

you lucky bastard i payed 550 dollares for mine
but then again i paid 75 dollares for the machine
never pay for filesharing!

Better hope it don't burn out

[GepperRankins]

compaq tft450


i think i got the focusing perfect now


the ghosting isn't a slowdown thing. it's just that on certain shades instead of projecting the proper colour i get neon blue. i called it ghosting because it's like what i'd call ghosting on a tv where it occurs sometimes a few pixels to the right


like this

[tracydani]

Ok, some causes for ghosting....

Cheap cables connecting monitor to pc.

Too long of cables causing degredation of image.

Running cables and power too close to each other causing interfearance.

Try running auto adjust cycle on monitor.

Video card problem.


Those are what I found so far. Hopefully they can help

EDIT: Oh yeah, maybe your lcd is not level(one side closer then the other) with the lens?

[GepperRankins]

3 out of 5 aint bad