View Full Version : Green Bars on E44W46LCD
armentage
10-01-2004, 04:11 PM
I just purchased the E44W46LCD. Its mostly fantastic, except I have one nagging issue when watching SDTV digital cable images, using my Explorer 8000HD DVR box with Time-Warner service.
I get these 2, 6" thick horizontal green bars, spaced about 10" apart, that slowly crawl up my screen and wrap around at the top. The bars are very, very faint, but visibly discolor everything they pass over. They move slowly up the screen, and loop around back to bottom.
The bars are coming out of my cablebox's image stream. They continue to move even after I pause playback (its a DVR). I'm using Component Video, with the so-so quality RGB wires that came with the box. The box outputs 16:9 video, and side-boxes 4:3 channels for me.
I haven't noticed the same problem while watching HD Channels or DVDs on Component-2 input.
Any ideas on what it could be? I'm hoping its the cable box
Ratman
10-01-2004, 04:56 PM
It may be poor grounding (ground loop) with your cable feed.
Ditto, 60 cycle interference getting in there some how.
armentage
10-03-2004, 12:47 AM
Ditto, 60 cycle interference getting in there some how.
Any suggestions on what I can do to correct this problem? When hooked up to RGB-PC input, the image is rock solid and free of discoloration.
I'm going to try moving my cable box away from my Amp & speakers... perhaps things are stacked a little too close?
One cheap suggestion that might work - get one of those surge bars that has coax in/out protection. Route your cable line through the surge bar. I've seen that clear up some nasty grounding effects.
armentage
10-08-2004, 10:03 PM
One cheap suggestion that might work - get one of those surge bars that has coax in/out protection. Route your cable line through the surge bar. I've seen that clear up some nasty grounding effects.
Funny thing is the problem seems to have cleared up all on its own. I haven't changed a thing. Image on non-HD channels still has some interference on it, not sure how to describe it or what might be causing it. However, that all pervasive green bars thing has just disappeared totally.
Yep that sounds exactly the same as what I observed once. The problem would come and go. Finally solved it with a monster brand power bar. I set up a splits screen and you could really the tell the 'conditioned' signal was better.
The reason you aren't seeing this on HD is the HD signal is digital and even though you can see the signal degradation visually, there must be enough of the signal present that your HD receiver can convert the signal into HD for you.
armentage
10-09-2004, 10:18 AM
Yep that sounds exactly the same as what I observed once. The problem would come and go. Finally solved it with a monster brand power bar. I set up a splits screen and you could really the tell the 'conditioned' signal was better.
The reason you aren't seeing this on HD is the HD signal is digital and even though you can see the signal degradation visually, there must be enough of the signal present that your HD receiver can convert the signal into HD for you.
I'm pretty sure that Time Warner NYC puts out digital on all channels. You can see horrendous pixelation on the less-watched channels (like SciFi or Tv-Land). It seems to me that they divide bandwith based on the popularity of the shows. In NYC you can't watch cable without a box AT ALL, and we have around 700 allocated channels.
