[kyoto221]

hi i have a Nvidia Geforce 7600 GT video card and this is the problem: anything i try to hook up to my PC that has to do with video i get these horizontal bars going up my monitor screen, for example if i have a VGA cable hooked up from my TV to my PC, or an S-Video Cable, or an RCA cable, and even a coaxial cable to my TV card, when ever i put in any of these connections i get those damn horizontal bars, anyone know the solution?


-things ive tried:

-replacing the video card
-replace the power supply


My System Specs:

-Intel Celeron CPU 3.20ghz
-2GB Of Ram
-Intel Desktop Board D101GGC
-Geforce 7600 GT
-Video Capture Card
-Seagate 500GB Hard Drive
-Western Digital 100 GB Hard Drive
-Cavalry 160 GB External Hard Drive
-Audigy LS Sound Card
-and alot of stuff hooked up to a USB Hub

and the TV is a Olevia 32 inch LCD

[kiwiguy]

You have a "hum loop", where the PC is grounded but the devices on the other end are "floating", often unable to be grouned as they commonly have a "live chassis" or simply a 2 core power lead with a plastic double insulated case, with no ability to ground.

Unless you can safely ground the appliance at the other end, I see no solution. TV's are the worst with a "live chassis", which you simply cannot ground.

[kyoto221]

wow ive posted this question in like 5 forums and no one has been able to give me a good answer, thank you so much for you reply. What do you mean by safely ground the appliance at the other end?

[kyoto221]

wow ive posted this question in like 5 forums and no one has been able to give me a good answer, finally someone who understands this dreadful problem, thank you so much for you reply =) . What do you mean by safely ground the appliance at the other end? Does this have to do with which plug i'm getting my electricity from?

[kiwiguy]

The appliance at the other end (the TV etc that causes the problem when you plug in the video) is most likely un-grounded.

Moreover it is also most likely unable to be grounded, as DVD players, TV's, Audio amps etc are often made these days with no ability to "ground" them, and to try and do so internally could kill you.

However, you give no clues as to what country you are in, as to every socket even having a ground, in case the aplliances are able to be grounded. Nor have you given any information on what you are connecting the cables to. Unfortunately we cannot read minds...

I can only repeat my earlier comment, in many cases there is nothing you can do.

I do not reply to PM's by the way.

[kyoto221]

please forgive me i should have gave more information, ok i live in America, i dont understand what you mean by "every socket having a ground",

the connections ive tried:

-VGA cable connected to the LCD TV and then to the back of my PC Video Card
-S-Video cable connected to the LCD TV and then to the back of the PC Video card

-and you said its the TV thats not grounded, but i think it might actually be the PC (idk if thats possible), but the reason i think this is i had one connection which was a coaxial cable from my local cable provider to my PC TV-Card

-thank you for your help

[kyoto221]

ok, i just recently found out some new information, someone lent me an outlet checker which shows you if an outlet is not grounded or if there are any bad connections, i plugged it in to the outlet where the TV was and realized this outlet is not grounded, i plugged it into the PC outlet and found out that one IS grounded, so heres my question, i am obviously not going to use the outlet which the TV was using, but the PC and the TV use two separate surge protectors, do i have to use one surge protector or will using two not effect anything?

[kiwiguy]

Using two will not affect anything.

Using a grounded outlet for the TV may help but only if the TV is designed to be grounded. Good luck

[K7M]

look at the plug on the TV if it has one prong wider than the other it gets it's "ground" from the neutral, and if the outlet is not correctly wired it will give you this problem. If both prongs are the same size try reversing the plug in the outlet. sometimes that will get rid of the "ground loop" as know by some techs.