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  Force TV Out on a Radeon Card 
 Date Written 
Jose Sa Dec 09, 2002, 02:51pm EST Reply - Quote - Report Abuse
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I have a Radeon 9000 Pro and Iím running a dual boot XP/ME. The problem Iím describing occurs in the same way for both OS.

First of all I successfully obtained the TV Out via a S-Video -> Composite cable, connected it to my VCR and extending the output of the RF cable about 20 metres. The next step was to get a Wireless Video Sender. I got it from Thomson (VS540). This device works perfectly fine with other video sources like VCR and DVD and should do the same with my PC since the input/outputs are the same. But (There is always a but), when I connect the equipment as described (PC off & TV OFF, connect cables, TV and Transmitter ON, PC ON), I was able to see the output of the boot sequence in my TV perfectly fine. The problem happened when Windows starts, because then the TV screen goes blank and in the Displays Tab of ATI Control Panel it states it only has the monitor.

I later on read from ATI Infobase ( that the board checks for a ď75 ohm impedance on the TV out connectorĒ. I guess this device does not conform with that.

Iíve tested this also in another Board I had (a GeForce 2 MX with TV Out) and the result was pretty much the same. When detecting for other Displays connected it didnít detected them, but would allow forcing the TV out anyway, and that did work!

The question Iím posing is if anyone knows how to force the TV Out for the Radeon cards.
Another thing is that, since the TV detection is not perfect, ATI Drivers should allow users to force the TV Out (Iíll ask them this also).

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Jose Sa Dec 09, 2002, 09:25pm EST Reply - Quote - Report Abuse
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>> Re: Force TV Out on a Radeon Card
While I was Reinstalling the latest drivers from ATI I had the TV Out set the all time. I noticed on courious thing. After I removed all ATI Contol Panel and Drivers and rebooted with Windows default drivers The TV Out WORKED!!!! My main monitor was at the lowest possible resolution (with Refresh rate 50 Hz ) but the TV was working perfectly.
After drivers reinstalled it was again the same problem!

Jose Sa Dec 11, 2002, 12:26pm EST Reply - Quote - Report Abuse
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>> Re: Force TV Out on a Radeon Card
In a final analysis, after trying everything I noticed I overlooked the fact that a Svideo-Composite adapter was provided with the PowerColor Radeon 9000 Pro. I used a cable I had already bought for my previous card (that didn't brought this adapter). I noticed there was a difference between the 2 adapters. The one I used, had 4 pins. The one that came with the PowerColor had 7. Once I've used this adapter the TV Out was miraculasly working, and the ATI Control Panel had no longer the TV Disabled.

Even though my problem is solved, ATI should provide 2 additional solutions:
- Add a note in the Manual about using a 7 pin SVideo connector
- Allow the user to choose wether he wants to force the Video output on his card. I'm sure it is pretty easy for them to know what are the capabilities of the card (1VGA; 1 VGA + 1 TVOuit; 2 VGA, etc) and according to this disable those configurations that are never going to happen, simply switching off those components that he can't detect and therefore allowing the user to switch them back on, if he really knows a device is connected.

Thanks for replying!

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