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Screen looks warped??

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Old 07-16-2006, 12:19 PM   #1
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Default Screen looks warped??

Hey all, I have a slight problem and need to know whats causing it.

I have a Panasonic 47WX53 47" RPTV. When just looking at a normal still picture, whether HD or non-HD, the TV and screen looks fine. But when the picture pans up and down, it seems there is sort of a horizontal warp right across the center of my TV spanning the whole screen. When the TV has a black screen, you can see a more darker horizontal strip about 6 inches in width, right across the center of the TV. You cannot notice any color difference, and you cant even tell its there until the image on the screen shifts up and down (the camera on the TV show pans up a mountain for example). It just looks like its warped right in the middle. It distorts the image. Any suggestion on what to do? What is the problem? thanks alot!
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Old 07-16-2006, 04:47 PM   #2
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Check this site http://www.panny.tv/

The information there will help you perform a service level geometry and convergence calibration.

The horz. band might be due to incorrect settings of your Black/white levels controls as well, or a combination of the two.

When you pull up the user level convergence 1, are you getting a nice white cross? In level 2, are the surrounding eight crosses also nice and white after adjustment?

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Old 07-16-2006, 11:56 PM   #3
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Im assuming im going to need one of those adjustment DVDs from best buy or something?
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Old 07-17-2006, 01:42 AM   #4
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Quote:
Originally Posted by mobkon
Hey all, I have a slight problem and need to know whats causing it.

I have a Panasonic 47WX53 47" RPTV. When just looking at a normal still picture, whether HD or non-HD, the TV and screen looks fine. But when the picture pans up and down, it seems there is sort of a horizontal warp right across the center of my TV spanning the whole screen. When the TV has a black screen, you can see a more darker horizontal strip about 6 inches in width, right across the center of the TV. You cannot notice any color difference, and you cant even tell its there until the image on the screen shifts up and down (the camera on the TV show pans up a mountain for example). It just looks like its warped right in the middle. It distorts the image. Any suggestion on what to do? What is the problem? thanks alot!
There is a form of 4:3 stretching for 19:9 called cinema mode. It makes the center of the screen look ok, but the edges are stretched. Take a look at your screen aspect and see what you have set.
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Old 07-17-2006, 10:26 AM   #5
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Quote:
Im assuming im going to need one of those adjustment DVDs from best buy or something?
Even the THX optimizer on many DVD's will work. A good test disk is a better option although.

Quote:
There is a form of 4:3 stretching for 19:9 called cinema mode. It makes the center of the screen look ok, but the edges are stretched.
Quote:
it seems there is sort of a horizontal warp right across the center of my TV spanning the whole screen
I believe his problem is a scrolling vertical expansion and contraction. If I've assumed incorrectly, you are right in that the pannys have a "full" mode that stretches the sides of 4:3 content to fill a 16:9 screen. This does indeed cause the outer edges on the L & R sides of the screen to appear wider.

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Old 07-23-2006, 01:27 PM   #6
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Quote:
Originally Posted by d6500k
Even the THX optimizer on many DVD's will work. A good test disk is a better option although.





I believe his problem is a scrolling vertical expansion and contraction. If I've assumed incorrectly, you are right in that the pannys have a "full" mode that stretches the sides of 4:3 content to fill a 16:9 screen. This does indeed cause the outer edges on the L & R sides of the screen to appear wider.

Doug k
Hmm, doesnt seem like anyone is really understanding what Im saying. The problem with my TV is that something is wrong with it, its not any kind of mode, its not "stretching" of the image. There is a horizontal area, spanning the center of the screen going all the way across the image. Its about 6 inches in height. When the screen is black, the area looks darker, when an image is up and it pans up and down, it looks as if the horiztonal area is warped, or bubbled out. It doesnt seem like its something that can be tweaked, or can it? Thats what im trying to figure out. If anyone knows what im talking about, or what the problem is and if it can be fixed with menu settings in Serviceman Mode, please let me know. thanks!
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Old 07-23-2006, 10:47 PM   #7
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Sounds like it is time for a picture to be taken and posted here.

Did you go into service after reading from the panny site?

If not, do so. Bring up the fine convergence pattern while in service.

Take a picture of the grid and post it as well.

Usually when a convergence board goes, the edges are warped. I cannot recall an instance from this type of failure shows the symptoms you give but ?

The pix will really help.

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