I have a projector home theatre setup and I am seeing a wide lighter band roll from bottom to top in my video signal. The color in that band is preserved, just lighter. Much like dark scan lines of a CRT when videotaped, but slow (takes several seconds to pass by) and light instead of dark. I know what causes the CRT lines, no need to go into that... and I'm pretty sure I know what's causing my lines (in theory). But how can I clean it up? Can I buy a device to clean that up or do I have to get a better cable? If I have to get a better cable, then how do I know what's a 'good' cable, the one I have says it's quite well shielded... I'm assuming that my problem is caused by interference in my area, but what should I do about it? The lines aren't 'horrible' but they are distracting in dark scenes.
Things of note: When I use a short video cable, there is no band. Whether I use a long s-video cable or a VGA cable makes no difference, the band is there with both long cables. The cables in question are 50ft long (s-video is actually two 25ft cables connected together). If I use the 50ft cables, yet curl them up 5 ft from the video source there is no band. Only when stretched out to length is there a band.
I have a Sanyo DVD player and I'm using the component outputs to send video to my projector (Dell 2300MP). The projector doesn't have component inputs per se, it uses the VGA input to carry that signal and I presume the electronics sort it out inside. The projector shipped with a cable with component plugs on one end and a vga connector on the other, I'm plugging in my VGA extension into that.
As anyone with a projector probably knows, the projector is a ways away from the DVD player and I purchased a 50ft VGA cable to do the job from Dell with the projector. ($50, wasn't too bad)
(in case you want specifics)From their marketing blurb: Constructed from high quality UL 2919 certified double-shielded (90% braid) 28AWG 75 Ohm coaxial conductors for the RGB signals, 28AWG 50 Ohm RG174/U for the H-sync signal, 28 AWG twisted pair cable, and solid pins for maximum durability, this cable features superior signal integrity design for minimal signal distortion, loss and ghosting.
Is that information bloated or is it just not enough?
Thank you in advance!
-- Shawn Wilson