PC to TV via RCA Video

[ednorton]

I have a Mitsubishi 60" 1080P DLP that works fine except the HDMI connectors don't work. (internal board is shot and can't be replaced.) Picture looks fine hooked up to cable via coax. Also Xbox games look fine when hooked up via RCA cable connections.

Trying to hook up PC to this TV to view video is another matter.... here is how it is hooked up....
Computer has video card with DVI/VGA out and S-Video out.

Video card out via S-video to RF Modulator.....Modulator to TV via yellow RCA cable.

Had to change PC display resolution to lowest setting avail ( 800X600) anything higher was too blurry to read any text. Still is blurry but readable at least. Video is ok but just barley acceptable. What is the weak link here?

I have read that composite video is only capable of 480i. But I still don't understand why the display looks fine with detailed Xbox games via RCA but not video from PC???

[jagabo]

What is the weak link here?

S-video and the "RF modulator". I think what you're calling an RF modulator is really a s-video to composite converter.

I have read that composite video is only capable of 480i.

Yes.

But I still don't understand why the display looks fine with detailed Xbox games via RCA but not video from PC???

The xbox isn't displaying small text like the computer. Stuff on the xbox is rendered big so it looks ok via compsite. You can set Windows to render with large fonts but you'll find it difficult to use since many dialog boxes won't render properly or may be too big to fit on the screen.

[newpball]

I have read that composite video is only capable of 480i.

That's correct.

[ednorton]

Yeah well.....thanks for your reply and NOT saying weak link was the poster of the question! LOL Garbage in garbage out equation.
I gave this to our niece and just trying to get it working as best as I can for her. Is a few miles away so I will try some other stuff. TV also has component video inputs...not sure if they work though.

I am looking at DVI-I to component conversion at the moment. Can this be done with just a cable type adapter?

[jagabo]

I am looking at DVI-I to component conversion at the moment. Can this be done with just a cable type adapter?

DVI-D to component, no. But some graphics cards can put out component over the analog pins of the DVI-A or DVI-I connector. If you have one of those all you need is the cable and to set up the graphics card for component out rather than VGA. See the user reviews for this adapter:

http://www.amazon.com/eForCity-DVI-I-Video-Component-Adapter-RGB/dp/B000E8V0YI/

Otherwise you'll need an DVI to component converter. A RadioShack near you might have one of these (you'll need a DVI to HDMI cable):

http://www.radioshack.com/radioshack-hdmi-to-component-converter/1500549.html

I don't know how well they work but it should certainly be better than s-video or composite.

[pandy]

I am looking at DVI-I to component conversion at the moment. Can this be done with just a cable type adapter?

DVI-D to component, no. But some graphics cards can put out component over the analog pins of the DVI-A or DVI-I connector. If you have one of those all you need is the cable and to set up the graphics card for component out rather than VGA. See the user reviews for this adapter:

http://www.amazon.com/eForCity-DVI-I-Video-Component-Adapter-RGB/dp/B000E8V0YI/

Otherwise you'll need an DVI to component converter. A RadioShack near you might have one of these (you'll need a DVI to HDMI cable):

http://www.radioshack.com/radioshack-hdmi-to-component-converter/1500549.html

I don't know how well they work but it should certainly be better than s-video or composite.

VGA is RGB and RGB is component signal and RGB to YPbPr active analog converters are available.
DVI-I is DVI-D + DVI-A - so DVI-A is VGA and DVI-D to YPbPr or to RGB (VGA) is possible trough active converter.
Cable only conversion (passive) from DVI-A (VGA) is possible when madVR renderer is used (special mode where YCbCr is output over RGB thus is available as YPbPr)