ATI Radeon AIW 9800 buzzing problem

[endellion]

All the time we've had this card there has been a problem with it: when using the tv tuner, it occassionally starts to make a buzzing sound. Sometimes the sound goes away by itself, sometimes you have to change channel on the telly to make it go away. Some tv channels never buzz, and some channels buzz quite often.
I have tried reinstalling, updated drivers and I have tried a different sound card, none of which has made any difference. I can't try it on another board as this is our only AGP. Has anyone here got any ideas what's causing it and/or how to fix?
System is ASRock K7VM2 (VIA chipset), 1 GHz AMD Duron, 512 MB mem, ATI AIW 9800 SE R350, C-Media CMI8738 5.1, running Win2K.

 

[rpgbefore...]

its probably ur os, get to the windows xp series atleast

 

[endellion]

now its got a dual boot with xp pro sp2. don't know yet if that'll fix it because so far it wont even tune in the channels properly

 

[KennyT772]

sounds like either a driver issue or a tuner starting to die. it may just be a bad singnal going to the card. move the pc to a different cable outlet and see if u can reproduce the buzz. then try the same port with a tv.

 

[bbriand]

I read somewhere that tuner cards should be as far away as you can get from your video card - something to do with RFI. I also think the article suggested having a card between them as a good idea (like a NIC).

This was like 3 years ago when I bought my tuner card and my memory is a bit fuzzy - so you might want to google it.

Does it sound like a 60Hz hum? Are you in NA? I wonder if you are getting some sort of bad grounding loop through your tuner card? Is the buzzing sound heard from your tuner/video cards or through your speakers?

Bill

 

[rpgbefore...]

oh yeah mabee u can try another os, try windows media edition

 

[endellion]

Well, this card is doing my head in. Installed new drivers, old drivers, new mmc, old mmc, different input signals and as a thank you for my efforts it now also buzzes without the tv being on. It even buzzes on the client comp using the eazy connect server thing.
I got this card second hand of a games company that used it briefly for testing their games with -- that wouldn't have done anything would it?
I am going to try someone else's (identical) card to see if that buzzes too -- if no it must be the card, or at least the tuner portion of it; if yes -- then what? the motherboard?
At the moment the card is getting its rf signal off a video recorder which has the ntl cable and the freeview box connected to it. If it still buzzes I'll try to bypass the tuner by using the s-video in, maybe that'll help.
But I do wonder why the hell does it do this buzzing, and why does changing channel get rid?