Why have a VGA port on an HDTV if it causes a hum bar?

[Randall_Lind]

I just got a Magnavox 32" 1080i,720p HDTV from SamsClub. It has a PC (VGA) port but when I hook up my pc it has a hum bar so what's the point of having a VGA port on the TV then?

I get the same thing via s-video. I was told HDMI to DVI fixes the hum bar issue but have yet to buy a cable. My idea was to hook PC to TV so I can watch DVD's until I can buy a Blu-ray player.

[oldaccount1]

idk but I use VGA all the time with my HDTV and it looks just fine

[Randall_Lind]

idk but I use VGA all the time with my HDTV and it looks just fine

looks great until I play a movie then there light line scrolls up the screen.

[+StevoFC MVC]

are you sure you are using the right refresh rate?

[Linkinfamous]

I'm not sure. I have a 1920x1200 monitor, and the picture quality is pretty close to perfect with the VGA cable, but under certain conditions (Certain static images) you can notice some artifacts.

Of course, I have a DVI out, so it's no big deal. I was just curious.

[Randall_Lind]

are you sure you are using the right refresh rate?

refresh rate is 60mhz and that is all I have so I can't change it same thing with s-video,

[Randall_Lind]

refresh rate is 60mhz and that is all I have so I can't change it same thing with s-video,

I set it up has a dual monitor seems to work good now there is still a faint line but not like before.

[_kane81]

what is a "hum bar"?

[LightIdea]

wtf is a hum bar? :rofl:

[Linkinfamous]

wtf is a hum bar? :rofl:

A visual artifact on the screen, typically a horizontal bar where the picture is distorted, which then rises to the top of the screen, and repeats.

I'm sure you've seen them on TVs.

[DDStriker]

what is a "hum bar"?

wtf is a hum bar? :rofl:

I'm guessing its a scanline bar

http://farm1.static.flickr.com/162/3683163...064b3fa.jpg?v=0

i've seen something like it before (full image is drawn but a much brighter bar of light in a certain spot on the screen) usually when the screen is out of sync with the source (tuning megadrive/nes consoles to a tv and being a bit off :p)

[Jason S. Global Moderator]

i think your problem stems from the tv. i use my VGA port and it looks fine.