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10 posts

Wannabe Geek

Topic # 24957 7-Aug-2008 19:57
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This is another problem I've been having with my HTPC besides the TV tuner card issue discussed in another topic. I bought a nice new full HDTV - Toshiba 46" LCD - earlier this year. For my HTPC I bought a Sapphire HD 3450 Video Card based on advice from friends.

Despite my best efforts I have not been able to get a picture through the DVI port to the TV using a DVI to HDMI cable at any resolution let alone 1080p even though the card is supposed to do this. The only way I'm getting a picture is via a VGA cable using either the VGA port or the DVI-VGA convertor supplied with the card. Of course this does not give me 1080p resolution but at least it works. I have three other PC's including a laptop with DVI out. All the other PC's use NVIDIA hardware rather than ATi and I can get a picture on my HDTV from all the PC's with NVIDIA graphics using the DVI-HDMI cable so the cable works. Its just the ATi card that doesn't.

After asking questions of my friends I finally found someone who seemed to know what the problem is. It appears that I need one of these - The newer ATi cards come with them standard but my card was bought in February and didn't come with one. I can't get a hold of one to test it so I can't say with certainty that it will solve my problem. This same person has also recommended I buy a NVIDIA 9600GT card for my HTPC. What advice can you lot here offer me.


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  Reply # 155055 7-Aug-2008 20:36
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What exactly have you tried to get it going?

If you use the DVI->HDMI cable by itself and turn on your PC do you get the BIOS screen? When you used the VGA output was it on the same DVI conector using a DVI-VGA connector?

All that adapter does it convert DVI -> HDMI which is all the cable you have does as well.

10 posts

Wannabe Geek

  Reply # 155146 8-Aug-2008 10:02
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No matter what I have tried the result is always the same - unchanging blue screen. No BIOS messages, no boot up messages, nothing. You can hear relays clicking in the TV but no picture. The ATi Catalyst SW picks up the TV and tells me what I've got correctly but no picture.

The card came with a DVI-DVI cable and a DVI-VGA converter. The first thing I tried was buying a DVI-HDMI converter that plugged into the TV and using the DVI-DVI cable. As it didn't work with that I was able to get my money back on the DVI-HDMI converter.

Next I bought a DVI-HDMI cable (that I've still got). Result was the same as stated above. I've used this same cable from my other PC's including my laptop to the TV and I get a picture and could quite happily use those PC's graphic cards except  that none of them are suitable for HD. The other cards are all NVIDIA whereas my HTPC has an ATi card.

I'm currently using a VGA-VGA cable and the DVI-VGA converter from the PC to the PC in port on the TV. The resolution is OK - 720p but I know I can do better if I can get the card working as advertised.


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Master Geek

  Reply # 156244 12-Aug-2008 11:50
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I used the power of trademe to flick my ATI 3870 card and bought a 9600GT passive cooled. I can safely say that if you want trouble free HDTV decoding and a simple setup, this is the way to go.
I was alwyas a fan of ATI by the way, so I'm not nvidia biased, just that Nvidia seem to have the better HTPC cards arguably.

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