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Grainy playback on Panasonic 50" Plasma

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Old 01-26-2008, 04:24 PM   #1
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Default Grainy playback on Panasonic 50" Plasma

Hello, everyone.
I am a new owner of a 50" Panasonic TH-50PX77U plasma flat panel (1080i). I have cable service through Time Warner. At first I was exstatic with the picture for HD programming. NFL games in HD looked terrific. I noticed certain HD broadcasts were better than others (Fox was great, NBC not so good). During this time I was using a 6' HDMI cable from the HD-DVR box directly to the tv. Last night I hooked up both a new Toshiba HD-A3 HD-DVD player w/ a 6' HDMI and my HD-DVR box w/ a 6' HDMI to a new Onkyo TX-SR505(B) receiver, which was connect to my TV with a 12' HDMI cable. The first HD-DVD's a checked out were the one's that came with the player (300 and Borne Identity). 300 looked pretty crappy, the low light scenes were very grainy (I've read this isn't uncommon for 300). They weren't just grainy though, the grains seemed to constantly circulate on the screen. Borne wasn't much better. Thinking the problem might be pass-thru the receiver, I hooked the HD-DVD player directly to the tv with the same results. Now it seems my HD cable programing isn't as sharp as it use to be (even bypassing the receiver) especially in low light settings. I don't know if I'm just hypersensitive now or what. My wife is convinced that the vibration from the upstairs washing machine has ruined the tv. Any suggestions? Is there any way to measure picture clarity that isn't so subjective? Thanks in advanced for any suggestions/comments.
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Old 01-26-2008, 06:27 PM   #2
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Sounds like you've swithed HDMI ports or perhaps using different ones, so check the basic settings for brightness, contrast, color, tint, sharpness to make sure that they are not way off.
Each port holds settings unique to that port only.

After that, who knows, could be the washer.
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Old 01-26-2008, 06:53 PM   #3
My plasma is High Def.
 

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I will check the HDMI port settings like you suggested. When I was testing the HD-DVD player I was using a different HDMI port. But when it was going through the receiver, it was the same I've always use.

There's a new wrinkle here. My wife and I just sat down to watch a SD version of Ocean's 13 in the HD-DVD player connected with the 6' HDMI cable through the receiver. It was awful. Moving grains in and around all the faces, etc. made it hard to watch. After about 5 minutes, I decided to get out the Walmart cheap-o DVD player I have and hook it up directly to the tv via S-vid component cables. The movie was awful in the same way. What's disturbing about this is that we watched SD Spiderman 3 two weeks ago using this method and it looked really good. That's got me thinking that something is wrong with the tv now. Has anyone ever heard of a plasma just degrading over a month's time? I'm a little distraught over this. I spent an arse-load of money on these components and now the picture quality is worse than the Sanyo CRT I just replaced. Can someone please help me figure this out? Anyway to definatively prove it's a problem with the TV?
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Old 01-26-2008, 09:50 PM   #4
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Try connecting with component cable from source to tv. If its better it might be the hdmi ports on the set. the set should be returned or call panny service num.If you are running a hddvd to the set with hdmi and it looks like toefung , the set is scewed.......
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