Rolling Bars when I connect Cable

goldfish · 01-11-07, 07:34 AM

Hi,

I'm seeing, for lack of a better term, rolling bars running vertically on my screen when I connect my cable through DVD player (built in tuner), or my VCR. My first thought is to try an in-line noise filter from the coaxal to the tuner. My next guess would be clean the power up with a surge protector with somekind of conditioner. All the cables have been tested on other systems with no problems. The DVD player shows a perfect picture until I touch the coaxal cable to it. Any other reccomendations would be great or thoughts on my first two options. Some basic system info as follows:

Optima Projector displaying 120" screen
Pioneer A/V receiver - Midlevel 7.1 with all the in and outs you need
Panosonic DVD with built in tuner
Basic cable service (not digital)

Running Coaxal to DVD - Component from DVD to Receiver - Component from Receiver to Projector.

Simkins · 01-11-07, 08:41 AM

Quote:

Originally Posted by goldfish

Hi,

I'm seeing, for lack of a better term, rolling bars running vertically on my screen when I connect my cable through DVD player (built in tuner), or my VCR. My first thought is to try an in-line noise filter from the coaxal to the tuner. My next guess would be clean the power up with a surge protector with somekind of conditioner. All the cables have been tested on other systems with no problems. The DVD player shows a perfect picture until I touch the coaxal cable to it. Any other reccomendations would be great or thoughts on my first two options. Some basic system info as follows:

Optima Projector displaying 120" screen
Pioneer A/V receiver - Midlevel 7.1 with all the in and outs you need
Panosonic DVD with built in tuner
Basic cable service (not digital)

Running Coaxal to DVD - Component from DVD to Receiver - Component from Receiver to Projector.

I just had that issue as well, mine was from DC current travelling over the cable line. I bought a surge protector with coax in / out (to ground it) and it solved my problem, and it should solve yours, reffered to as "ground loop".

Ratman · 01-11-07, 09:15 AM

Or... just call your cable provider to come out to check that the line is properly grounded.

acteon · 01-20-07, 04:09 PM

In another thread, the poster disconnected the cable ground and the problem disappeared. He knew then that the problem was the cable company. This may save you some bucks if the conditioners, etc., are expensive. Then, hook ground back up and call company like above poster said. If not fixed, ground loops can be a pain in the neck. You will have to start isolating each component to find the bad one. If possible, hook up all component grounds to the same ground. If the ground loop is inside your house, it may be from using two different ground wires. Another poster mentioned the two different ground wires may have different potentials (something about ohms law creating resistance?)

miniz · 01-20-07, 04:29 PM

ground loop.

Why o' why do you have a 120" screen that doesn't have any HD content available? Wow, that must look just horrible. I couldn't even imagine how bad that must look.

Ratman · 01-20-07, 05:22 PM

Quote:

Originally Posted by miniz

ground loop.

Why o' why do you have a 120" screen that doesn't have any HD content available? Wow, that must look just horrible. I couldn't even imagine how bad that must look.

Ground loop already explained...

Why o' why do you obsess about everyone's HD? You worry about you and keep the threads "on topic".

miniz · 01-20-07, 06:13 PM

I honestly don't know how anyone could stand watching a 120" analog image. I can hardly stand it on a 27" TV.

Thank you for nit-picking Ratman, once again. You never fail to take the opertunity to up your post count.

Ratman · 01-20-07, 06:35 PM

Trust me... it has nothing to do with the "opertunity" to up my post count nor am I picking nits. It's just that your continual obsession with criticizing others about not having HD and using VCR's becomes challenging.

miniz · 01-20-07, 06:52 PM

Your continual obsession with criticizing me, with the sole intention of upping your post count is becoming old. Now go have some fun with Windows 95 and stop posting, just to post.

Ratman · 01-21-07, 12:53 PM

Heed you own criticisms...

01-11-07, 07:34 AM	#1 \| Link	<a href='http://rev.avsforum.com/phpAdsNew/adclick.php?n=a4ac4393' target='_blank'><img src='http://rev.avsforum.com/phpAdsNew/adview.php?what=zone:30&n=a4ac4393' border='0' alt=''></a>
goldfish New Member Join Date: Sep 2003 Posts: 6	Rolling Bars when I connect Cable Hi, I'm seeing, for lack of a better term, rolling bars running vertically on my screen when I connect my cable through DVD player (built in tuner), or my VCR. My first thought is to try an in-line noise filter from the coaxal to the tuner. My next guess would be clean the power up with a surge protector with somekind of conditioner. All the cables have been tested on other systems with no problems. The DVD player shows a perfect picture until I touch the coaxal cable to it. Any other reccomendations would be great or thoughts on my first two options. Some basic system info as follows: Optima Projector displaying 120" screen Pioneer A/V receiver - Midlevel 7.1 with all the in and outs you need Panosonic DVD with built in tuner Basic cable service (not digital) Running Coaxal to DVD - Component from DVD to Receiver - Component from Receiver to Projector.

01-20-07, 04:29 PM	#5 \| Link	<a href='http://rev.avsforum.com/phpAdsNew/adclick.php?n=a591f81a' target='_blank'><img src='http://rev.avsforum.com/phpAdsNew/adview.php?what=zone:36&n=a591f81a' border='0' alt=''></a>
miniz OFFICAL HOME OF HDTV Join Date: Mar 2004 Location: Small Town X, HDTV Land Posts: 2,221	ground loop. Why o' why do you have a 120" screen that doesn't have any HD content available? Wow, that must look just horrible. I couldn't even imagine how bad that must look. __________________ "PLEASE HELP STOP HDTV ABUSE! FEED YOUR HDTV AN HD SIGNAL!"

01-20-07, 06:13 PM	#7 \| Link
miniz OFFICAL HOME OF HDTV Join Date: Mar 2004 Location: Small Town X, HDTV Land Posts: 2,221	I honestly don't know how anyone could stand watching a 120" analog image. I can hardly stand it on a 27" TV. Thank you for nit-picking Ratman, once again. You never fail to take the opertunity to up your post count. __________________ "PLEASE HELP STOP HDTV ABUSE! FEED YOUR HDTV AN HD SIGNAL!"

01-20-07, 06:52 PM	#9 \| Link
miniz OFFICAL HOME OF HDTV Join Date: Mar 2004 Location: Small Town X, HDTV Land Posts: 2,221	Your continual obsession with criticizing me, with the sole intention of upping your post count is becoming old. Now go have some fun with Windows 95 and stop posting, just to post. __________________ "PLEASE HELP STOP HDTV ABUSE! FEED YOUR HDTV AN HD SIGNAL!"

01-21-07, 12:53 PM	#10 \| Link	<a href='http://rev.avsforum.com/phpAdsNew/adclick.php?n=a591f81a' target='_blank'><img src='http://rev.avsforum.com/phpAdsNew/adview.php?what=zone:36&n=a591f81a' border='0' alt=''></a>
Ratman AVS Special Member Join Date: May 2002 Location: Collingswood, N.J. Posts: 8,242	Heed you own criticisms...

01-11-07, 09:15 AM	#3 \| Link
Ratman AVS Special Member Join Date: May 2002 Location: Collingswood, N.J. Posts: 8,242	Or... just call your cable provider to come out to check that the line is properly grounded.

01-20-07, 04:09 PM	#4 \| Link
acteon Member Join Date: Oct 2006 Posts: 35	In another thread, the poster disconnected the cable ground and the problem disappeared. He knew then that the problem was the cable company. This may save you some bucks if the conditioners, etc., are expensive. Then, hook ground back up and call company like above poster said. If not fixed, ground loops can be a pain in the neck. You will have to start isolating each component to find the bad one. If possible, hook up all component grounds to the same ground. If the ground loop is inside your house, it may be from using two different ground wires. Another poster mentioned the two different ground wires may have different potentials (something about ohms law creating resistance?)

01-20-07, 06:35 PM	#8 \| Link
Ratman AVS Special Member Join Date: May 2002 Location: Collingswood, N.J. Posts: 8,242	Trust me... it has nothing to do with the "opertunity" to up my post count nor am I picking nits. It's just that your continual obsession with criticizing others about not having HD and using VCR's becomes challenging.