Help with 720p to Epson projector?

duck_hairb

If anyone can solve this problem for me I will buy them a small horse.

I've had this Epson EMP-TW100 projector for years now and only ever used S-Video. Last month I built an HTPC with a DVI output because I was hoping to watch Blu-Ray and other HD content on my projector in its native resolution 1280x720 - nice hd widescreen.

Except I can't. I have a 780g motherboard, on board Radeon 3200 graphics with DVI output. But if I switch to 720p (I have to force it because the graphics controller software says the best the projector can do is 1280x1024) the screen flashes and the projector claims the mode is "Not Supported".

The projectors manual, btw, expressly says that this mode IS supported.

Now I have no other DVI source to test with so I can't pin the problem on either component.

I've tried altering the frequency of the video signal, no dice.

I know the graphics card, projector and cable work because I can get 1280x1024. I can zoom this image to get a 1280x720 but I lose the top and bottom of my desktop.

I have the latest Radeon drivers for the graphics card.

Any ideas? Anyone?
Thanks to Adam T for trying, but the projector is the only screen connected to the htpc - there is no monitor confusing the graphics card. The projectors native resolution is 1280x720 (it's a 3-panel LCD) which is widescreen.

Answer
I couldn't speculate as to why your projector flashes when it gets the signal from your PC. However I may have a solution for you concerning the zooming and losing part of the screen.

I'd suggest that you're having an aspect ratio issue. If I had to guess, you are probably using a non-wide screen computer monitor. Since your computer wants to display the image on your primary display (the computer monitor) correctly, the secondary monitor (your projector) is displaying the same aspect ratio as the primary display.

Here is your problem, the software automatically suggests that you use 1280x1024. This is a bad resolution to see wide-screen video because it is almost a 4:3 ratio. 720p is a 16:9 aspect ratio, but your graphics card might not want to display that either. Wide-screen computers use a 16:10 aspect ratio.

So, when you tinker with the screen resolutions I would suggest that you force the graphics driver to output a resolution at:
1280x800 or 1280x720

If you get error messages or if those options are ghosted out, I would turn off the computer and restart it with your monitor unplugged and only having your projector turned on. This may help your computer automatically make the switch for you.

Question for EPSON projector owners?!?

Bob A

Hello,

I am getting ready to buy one of the LCD projectors from EPSON, but for those of you who have the newer models of their projector line:

"What exactly does the zoom feature do?"

Now, I know that when you move the projector far from the screen, the image increases in size. When you move it closer, the image decreases in size. So, does zooming allowing you to obtain a decreased image from far away just like if the project was closer to the screen? Thanks for the clarification and please do not direct me to another source. All I want to know is if I can adjust the size of the screen when it is x amount of feet away from the screen.

Example:

When the projector is 12 feet from the screen, the size may be 70x70. Can I "zoom in" and have a 50x50 size screen from the same exact 12 feet from the screen projector distance?

Again, thank you for the knowledge and if you don't have an EPSON, still inform me the general nature of the product.

Answer
Your understanding of it is correct. The zoom lens enlarges/decreases the image size.

How much you can zoom in and out is dependant on the projector. If you had it at 12 feet and had an Epson PowerLite Home Cinema 1080 UB then you would have a range of 57" to 122" diagonal.

Check out your projector on http://www.projectorcentral.com and use their calculator to estimate the size of screen you can have when the projector is X feet away from the screen. Their calculator will also tell you an approximate brightness of the projected image (how dark you room has to be).

I have an older Epson 550, but the zoom lens is the same as the newer models. I have my projector 10 feet away from the screen and it will go up to about 96" (diagonal). I have mine at 90" though.

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