help pleaze

could someone please tell me how to find the graphics settings graphics card frequency, and monitor resolution.
im running windows 98se.i was told that it might be the cause of why my pc interfars with my tv when i turn it on.i get these lines going through the tv and it stays there till i turn of the pc.
and could yous tell me what the proper settings would be.thankyou

 

I believe that is RF going through the electrical lines caused by the general workings of your PC, not just the video card. That is why you have a FCC compliance sticker on it, usually located on the back.

 

icecold

The quick and easy test is to turn the monitor off and see if the interference disappears. That can help isolate the source. If that doesn't make any difference, then turn off the Computer. Use what you learn from that test to determine which component is radiating the interference.

Generally it will be due to the housing of either the monitor or the computer not being grounded properly. Your wall receptacle may not provide a proper ground, especially if you live in an older house. Try connecting your computer, monitor, and other periphials to a good earth ground conductor that is connected to a reliable ground electrode. Do not expect to run with the computer housing removed and not have RFI or TVI.

There is also the possibility that your input TV signal isn't strong enough due to having a poor antenna or being in a fringe area.

Most modern computers and monitors are well shielded and meet all FCC requirements for supression of radiation. If yours is causing a problem, after you have done the foregoing, you must contact the manufacturer for relief. If you get no help from them, contact the FCC and they will accept your complaint and work with you to find a solution.

There are exacting specs that define how far away from the computer that a TV should be to operate properly. It also helps to use a shielded coax line for the antenna signal transfer from the antenna to the TV. RG59 coax is commonly used for that purpose, and a balun is used when needed.

Interference can also be introduced into the line cord that connects the device to the power source and thence to other devices connected nearby. This is not as common as the direct radiation interference but does happen occasionally. It is easily quashed by adding a high frequency trap filter in the line cord. You can easily make one using an iron ferrite rod from Radio Shack (or get one from an old junk radio antenna) and wrapping the line cord around it for a few turns. A good quality UPS will also filter that RFI out and prevent it from getting into the power line.

Post back if you have any questions. This problem can be traced to its source and eliminated.

 

help

i turned of the monitor and the lines went away so what does that mean.i took out nortons antiviris the other day and put in AVG and that helped a little bit. norton wasnt letting me close down properly it was leaving a colouered pattern befor it turned of. thankyou for the reply will wait till i hear back from you

 

Well, that narrows it down somewhat at least.

Check the monitor cable to see that its connector is fully plugged into the computer.

Try setting the monitor resolution differently. I find that the 60hz. setting is usually the least likely to interfere with a TV since that's the same frequency the vertical scan of the TV uses. That give a zero beat condition which is usually best. But try all that are available, yours may differ.

Did you consider running a ground wire to your equipment?

Another very important thing to consider is, how good is your TV antenna? If you are using rabbit ears or have weak reception for any other reason, you will find it next to impossible to completely eliminate this interference. Under those conditions, you should separate the TV and Computer as far as possible. Also try different orientations.

If your TV reception is poor, you may want to consider upgrading your antenna and also using a coax feed line if you don't already have same.

Lastly, some monitors are better than others so perhaps you will have to trade up. I should also mention the possibility that your monitor may have an internal component that has failed but that would require bench testing by a competent tech with a good spectrum analyzer.

Good luck in your quest.

 

I had similiar problems and it seemed to be refresh rate related.

Actually I had two problems at the same time.

One was the TV interference. The other was a very high pitched sound from the Monitor. And they seemed to coincide.

I lowered the refresh rate on this monitor from 85 to 75 and both problems left.

BillyBob

 

BillyBob
Thanks for dropping by. I meant to say the refresh rate but somehow my old cobweb filled brain didn't get the words out and i absently typed resolution. I need you to keep an eye on me from time to time.

I'm running at the 60hz refresh rate but only because that's the default when setting the resolution at 800 x 600 on this HP box. The two are somewhat interlocked by default although I can manually change either separately.

I have a feeling poor TV reception is playing the major role in icecold's problem though. I think tauranga is in New Zealand but I'm not sure how far it is from any TV stations.

Regards.

 

Hi Zephyr

Well I am glad something turned out good today. Not much else has. It has been a Murphy's law day today.

Thanks goodness this old box is still chugging along

Speaking old cobwebs, fuzzy brain etc.

I did see the TV inferference. But everyone in the house EXCEPT ME heard the sound. So when I shut the PC off and the sound went off also, I had to have my Wife stand here and listen while I made changes.

Every once in awhile I get the sound back so I am VERY QUICKLY notified of same and just readjust the refresh rate. I usually just change it either way and put it back and all is well for awhile.

BillyBob

 

Icecold

Try this:

Put your computer system on an extension cord and run the power from another room on a different circuit. Does that stop the problem?

Most likely the noise is being transferred down improperly wired or worn out wiring.

My second computer is on the same circuit as an intercom. Every time I shut it down, it makes a sound in the intercom as if someone pushed the talk switch.

 

zephyr

hi zephyr yes tauranga is in newzealand our tv station is close to hamilton so not that far away i dont no what ive done but its not that bad now for some resone maybe its because i took out nortons antivirus and put in avg.i dont no but thanks for all the info this is a awesome site all the people out there that help have a good day mate and thanks for the help.and everyone else thats helped me.