tv makes buzzing sound when using tv-out

clockworks · 01-25-03, 12:46 PM

hello,
when i am using tv-out with my nvidia car, the tv (it sounds like the screen), emits a humming/buzzing sound. its quit faint, but noticable. is this because my refreshrate is too high or low? i'm using the recommended values of
HorizSync 30-50
VertRefresh 60

thanks for the help,
-- christopher

ReKleSS · 01-25-03, 10:02 PM

I don't think the card uses the refresh rates for tv-out, because the frequencies are all predefined. Are you sure the sound is from the screen, not just some static from the speakers? My guess is that it's EM interference. Stick a ferrite over the cable to fix it.
-ReK

clockworks · 01-26-03, 01:26 PM

what is a ferrite? thanks for the help...=)

-- christopher

Quote:

Originally posted by ReKleSS
I don't think the card uses the refresh rates for tv-out, because the frequencies are all predefined. Are you sure the sound is from the screen, not just some static from the speakers? My guess is that it's EM interference. Stick a ferrite over the cable to fix it.
-ReK

ReKleSS · 01-26-03, 04:09 PM

A ferrite is a little thing you can get from most electronics shops that suppresses EM radiation from cables - if you look around, you should be able to find one, they're basically thick cylinders that you clip over the cable. Here's one from the local electronics place:
http://www.dse.com.au/cgi-bin/dse.st...uct/View/D5370
-ReK

01-25-03, 12:46 PM	#1
clockworks Registered User Join Date: Jan 2003 Location: texas Posts: 17	tv makes buzzing sound when using tv-out hello, when i am using tv-out with my nvidia car, the tv (it sounds like the screen), emits a humming/buzzing sound. its quit faint, but noticable. is this because my refreshrate is too high or low? i'm using the recommended values of HorizSync 30-50 VertRefresh 60 thanks for the help, -- christopher

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01-25-03, 10:02 PM	#2
ReKleSS Registered User Join Date: Dec 2002 Location: Australia (somewhere) Posts: 16	I don't think the card uses the refresh rates for tv-out, because the frequencies are all predefined. Are you sure the sound is from the screen, not just some static from the speakers? My guess is that it's EM interference. Stick a ferrite over the cable to fix it. -ReK

01-26-03, 04:09 PM	#4
ReKleSS Registered User Join Date: Dec 2002 Location: Australia (somewhere) Posts: 16	A ferrite is a little thing you can get from most electronics shops that suppresses EM radiation from cables - if you look around, you should be able to find one, they're basically thick cylinders that you clip over the cable. Here's one from the local electronics place: http://www.dse.com.au/cgi-bin/dse.st...uct/View/D5370 -ReK