Why no signal with dual display (LCD) and TV out? ASUS EN7600GS Silent and Panasonic PT-47WX49E

Yes indeed the above prereqs are established. And you can see the TV screen change to show that *some* kind of signal is being transmitted. Lots of red dashes against black background.

I tested the function on a different machine (XP) with a graphics card (eVGA 5200 - nVidia chip and same display tweaking software) and an S-video out port connected to the S-Video in port of the Panasonic.

While I booted the XP machine, I saw crisp POST info (B&W) and then the ASUS logo of the motherboard in bright red and green...so far so good. Then when the OS portion was loading, the Windows logo went to almost black and white.. Very very poor color. The login prompt also came up devoid of any color but I could at least see the prompt. I logged in and basically saw a desktop devoid of color. Wasn't crisp either. I tweaked the nVidia software and it saw it was connected to a TV and that it was using S-Video connection. So, at least I saw perfect text and color during POST but lost color/crispness when the kernel loaded. Latest nVidia drivers for that card as well

But back on the Vista x64 machine with this proprietary connector ASUS graphics card. Latest drivers, detects and see the HD TV, plus sees it's connected via component cables (RGB) but just see scan lines - like it's a refresh rate problem.

I recently replaced the signal board for the TV with a refurb'ed one but as I mentioned earlier, cable TV and DVD video (same component connectors btw) is perfect.

TV incompatibile with Windows graphics display information?

When you tested with the regular basic cableTV and DVD movies, did you use the component video inputs of the TV?  If you did, then I would conclude that the video card port or the special cable has a problem.  Keep in mind that component resolution is lower than most desktops, so try 1024x768 or less.

basic cable uses coax and DVD uses component video. Thought I tried 1024x768 (believe I even went to 640x480) but will double check my work.

I also ordered a convergence manual form the refurb'd board manufacturer since I hadn't done that sicne I replaced the signal board. Maybe there's a setting in there that effects the scanning rate...

I did test the 1024x768 resolutions but same issue (red snow, single instance green line runs from bottom to top of screen over the interval of 2-3 seconds)

No, not the graphics card....the signal board in the HDTV. Got it from PTSCORP.com, a reputable electronics site.

Ok, you've proven that the component video inputs on it work with the DVD player, so that means your graphics card is the problem.  It looks like there's some kind of hardware problem with it; I don't think you can go any further, as none of the parts are user-serviceable.

OK The VGA and Digital outputs are fine on the graphics card. Is it possible the HD output would be affected? I'm tempted to test the output on another component TV just to be sure

Only your HDTV-out port seems affected.  You can test with another component TV, but I think you proved that the TV works with a DVD player through the component inputs.  The DVD player outputs 480i or 480p, and you said it doesn't work when you drive it with the video card at 640x480 and 1024x768.  That pretty much eliminates the TV.

p.s. I saw your post at http://vip.asus.com/forum/view.aspx?board_id=9&model=EN7600%20Series&id=20080408100608015&page=1&SLanguage=en-us

with a resolution of 4801x480p at the component input stage, would my graphics 4:3 resoution then be a problem for this projection (HIDef capable) TV system? FWIW, I also set my TV to display all modes of aspect ration including 4:3, but to no avail.

I mean, you'd think ASUS would already have considered that but wanted to at least ask.

Hey what about this? Since it's an HDTV-out > component, isn't it possible that I need a true HiDef TV? Mine is a projection system that can *display* HiDef when I connect a HiDef Set Top Box to it. It works beautifully when I have the service connected.

But without this STB, I'm not sure exactly how this translates to signals being interpreted correctly or if this is moot given the fact the component connectors indicate that the signal is just plain old component signal. That the term HiDef from ASUS is merely a marketing term for it.

>would my graphics 4:3 resoution then be a problem for this projection (HIDef capable) TV system?

No, that should not be a problem.

>isn't it possible that I need a true HiDef TV?

No, I have a pre-HDTV projector that I have used to display high-definition TV shows through the RGBHV inputs, and it has no problem doing that.  The TV only cares about the resolution being sent to it.

So if I find the card is defective in the TV out portion would a converter like this work?

http://www.ramelectronics.net/audio-video/adapters/dvi-component-and-vga-adapters/gefen-dvi-to-component-adapter-ada-dvi-2dvicmp/prodGEF00001.html#

                                  - DVI > computer flat screen
Card > Converter >
                                  - DVI > component > TV component in

It might - RAM electronics carries good products and I use them, though I've never had to investigate going from DVI to component.  I assume the DVI is DVI-I, so that no expensive digital to analog conversion is needed.  Perhaps a call to them will confirm.

Well its the card I have to submit. Shoot. The rest of the card is fine and it wasn't cheap when I bought it. Sucks. I tested against another component-capable tv and no signal. I'll never buy ASUS again.

Thanks for helping me trouble shoot Callandor.... It's ATI for me going forward.

I now need a card with PCI-E, Vista x64 capable and outputs at least a Y Pb Pr output