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Not always, but often. And sometimes on commercials, but usually only on the actual programming (shows):Very faint but noticable horizontal lines, thin, light gray, each widely spaced from the next (for a max of three or four moving at the same time on a 50" display), slowly scrolling from the bottom of the screen to the top.
This happens MAINLY on "Big Three Plus FOX" network channels, but has on occasion shown up on the cable channels.
It goes away after the unit has been on for a while (figure 15 to 30 minutes).
This is a Pioneer PDP-5030HD plasma display with Pioneer PDP-RO3U Tuner.
"Set top cable box" is a digital Scientific Atlanta "Explorer 4200". All pluged into dedicated, isolated ground AC lines and Monster and Adcom power conditioners.
Help?
~~b
Follow Ups:
I warned you about not getting a Panasonic plasma. The wrath has come upon you. Damn heathen...I'm just kidding, as usual. I have no idea what's causing this.
Just kidding again. I have seen several members on AVS forum report this about their plasmas. Some of the suggestions in the posts below may help or completely eliminate the problem for you. From what you're saying, it sounds like a power supply or transformer issue. Am I correct in understanding that when it goes away it doesn't come back while the plasma is on?
Here's a list of some other possible causes of the problem. Is the STB new or one you've been using? Have you switched to a different type of output to the plasma (S-video to component, maybe)? Is there something else now plugged into the same outlet as the plasma? Or maybe on the same line? Is everything plugged into the same dedicated line or do you have multiple dedicated lines? Are you forgetting about a recent change? Did you not get the $2600 Shunyata power cord like I told you to?
A few people that reported the problem were using the component outputs from their STB. One member happened to have a DVI output and tried this output to the plasma. Problem disappeared. Others got a STB upgrade from their provider (who happened to be upgrading their network) and used the DVI output to eliminate the problem.
You might try doing a search in AVS forum in the Plasma and LCD Flat Panel Displays section. I'm sure you'll find some information and maybe a possible solution to the problem (if my or others' suggestions don't do it).
In the end, you may end up needing a service call. I hope that's not the case, but if it is I hope you can get it resolved quickly. If I think of anything else (thinking of Britney Spears right now), I'll let you know. I'll check AVS forum when I get a chance and see if I can find out any more information that could help you.
:-)last night I sat there and timed the errant activity. It went away in just over 4 minutes.
The first time I noticed it, the "faint scrolling lines" hung in there, making me cry, for most of an entire episode of ER. Last night it was gone before the "West Wing" opening credits were over. So maybe it's some weird break in behavior? The thing's only been out of the box for a couple of weeks.
Right now I'm using standard old coax from the set-top box to the display's tuner (although the digital set-top does have a S-video output).
Component cable IS being used from the DVD to the tuner, and that is a new thing (formally S-video cable). But these "lines" do not appear when playing DVDs; only broadcast TV.
However if you dropped by the house I'm sure you'd find six or so things I've done wrong in terms of hook-up. And if not "wrong" (everything works), at least plugs n' patches that could be considered, uh, inelegant.
With any luck, what lasted an hour originally, then 15 minutes and most recently 5 minutes will go away completely. But more and more ('cause it doesn't happen with DVD, DVD-A or VHS inputs engaged) I'm convinced it's something to do with either the local cable signal and/or the way I've linked that signal into the system.
Thanks again, Joe.
~~b
It's easy to get a coax cable to start messing up -- just touch it. If it's not the cable itself, it's the demodulator. I have a 12 year old Emerson television in the bedroom that's more sensitive than Richard Simmons when it comes to the position of the coax cable. You have to get it just right for a perfect broadcast signal. Otherwise, it's a total crap picture. Good thing we go through the RCA input for the porn.If you're OK with it going away by itself, you may be in for a surprise and a big letdown when it shows up again. Is that what you want? Huh, Plasma Junkie? What you gonna do for a fix then, huh?
I'm sure you know that just unconnecting and reconnecting cables (all kinds) might clear up the problem. Next time you're watching broadcast television, start unplugging the cables and power cords (of the off components, of course) not necessary for your viewing pleasure. You may come upon the culprit that's playing the gopher to your Bill Murray. Wouldn't you like to know the problem's solved, rather than in remission?
It may even be someone running an appliance next door to you at certain times. Shut off their main breaker if it's not on your end, just in case. Leave no stone unturned.
Did you try a search on AVS forum like I told you to? I took a quick look, but could only find references similar to the situations that I've already described. Sorry.
By the way, clean up your own cable mess. I'm not your damn maid. Come to think of it, maybe your hodge-podge of a cable mess could be causing some of your troubles (mixing and paralleling power cables with video cables). Worth a try to "neaten" up a bit and see. Know what I mean, Oscar?
In truth, the interconnets etc. are in pretty well "dressed" condition back there.Last night, again, the phenomenon came and went, this time even faster. Maybe sixrty-to-ninety seconds worth.
Good idea about pulling the plugs (on non-running components). I'll give that a try. Also...it' been cold 'round these parts, thus the heat's been on and the interior air dry. I wonder if plasma reacts to static charge in ways yet to be plumbed, understood or made public. And if that's the case, could "wrm up" be getting rid of those lines by way of a sort of degauzing?
Whoa. This is getting deep.
~~b
you are dealing with a rf problem. upgrade all you power cords to a shielded version. my nec 42mp3 had that type of problem in the past. a low pass filter for all your components would also help. try to stay away from transformer based ideas. i have used isolation and balanced transformer with my plasma display and i always have a problem with crawling moss in the dark grays and blacks. after i remove the transformer from the system the problem clears up.i use a multi-conductor shielded silver plated copper power cord with tordial (1 per end) filtering. i have had excellent results using this method.
regards,
alan maher
perfect cable
Perhaps it performs better after warming up. I had the same problem displaying DVDs on a 32" Philips Magnavox I bought pretty much on impulse.Repairman came out and told me it was a design flaw in the power supply and irreperable. Fortunately, I'd purchased from Sears who had an excellent return/exchange policy. Exchanged it for a Panasonic with no effort on my part (they picked up the defective set and delivered the new one) and the Panny has performed flawlessly for going on 5 years.
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