I got the service manual CD for this TV. Using it I was able to reduce the overscan and clean up some of the minor geometry issues (pincushion in the form of bowed vertical lines). I was able to reduce the horizontal overscan to about 3-4% before I started seeing issues on the sides of the screen. I set the vertical overscan to 2-3% even though it could go lower with no apparent issues. This was enough to see tickers and other info at the bottom of the screen, but still close enough to horizontal to keep the aspect ratio correct.
The manual contains a lot of info, but there are only 9 settings that affect the geometry. If you just want to clean up the geometry getting the manual is probably overkill, so I am posting the info here. If you want to change the white balance or other color settings, then it's probably worth buying since there are a lot more settings.
If you just want to reduce the vertical overscan so that you can see the bottom tickers it is pretty easy, there is only one setting you need to change and it doesn't seem to require changing other settings. However, if you don't also change the horizontal it might make the aspect ratio far enough off to be noticable in normal viewing.
If you want to reduce horizontal overscan it is trickier since the horizontal size setting changes the width of the center only and warps vertical lines. So if you change horizontal size you must also adjust 1-4 other controls to make vertical lines straight and vertical again.
The manual describes using a signal generator, but you can make these settings by viewing the overscan and cross hatch patterns from Video Essentials or Avia. If you don't have these you might try using the widescreen circle test pattern from a THX certified disk (usually under Setup). If you just want to adjust the vertical size to see tickers, you can tune to a channel that has them.
Here is how to adjust the geometry (at your own risk).
The manual recommends the following settings before making adjustment.
Video Status - Standard
Tint, Color, Pict, Bright, Detail - 00 (Center)
Color Temp - Low
Dig Noise Clear - Off
Natural Cinema - AUto
Bass, Treble, Balance - 00 (Center)
AHS - OFF
Aspect Ratio - Full
For geometry adjustments I don't think all of these are necessary, but you should set Aspect Ratio to Full and probably turn off Dig Noise Clear. You should also adjust the Tilt from the user menu if your picture has any Tilt before starting.
To enter the service menu, make sure the two switches at the top of the remote are set to TV and VCR. Press the Sleep Timer
button and while the screen displays zero seconds simultaneously press Display
and Video Status
. You should see a numbered menu appear on the screen. To leave the service menu or go back up a level, use the Back
Press the 1
key on the number keypad to enter the Picture/Sound settings.
Use the Channel Up or Down
keys to scan through the available settings. You need to find the D01-D14 range of settings. You can hold the keys to scan quickly until you get close.
Before you change anything, I would recommend that you write down all current settings from D01 to D15
. You won't need to change all of them, but just in case you accidentally do you will be able to get back to them if things get messed up. I wouldn't recommend messing with any settings not listed below unless you know what they do.
The settings you need to adjust picture geometry (D
eflection Settings) are:
D01 - v.SIZE - vertical size
D02 - EW - pincushion (straightness of outside vertical lines)
D03 - H.SIZE - horizontal size
D05 - V.LINE - vertical linearity (top and bottom line spacing equal size)
D06 - V.CENT - vertical center
D07 - EW.TRAP - trapezoid (angle of outside vertical lines)
D08 - BOT.CORN - adjust vertical lines bottom corners only
D09 - TOP.CORN - adjust vertical lines top corners only
D14 - H.CENT - horizontal center
To change any setting, use the Vol +/-
keys. Note that you must press the Muting
button to save each setting that you change while that setting is active. Otherwise the changes will be forgotten as soon as you leave the service menu or press some other remote buttons.
The basic procedure is to set the Vertical Size, Center and Linearity (if necessary), then set Horizontal size and center. If vertical lines at the right and left don't look straight and vertical after this, start with EW to make them as straight as possible, then use EW.TRAP, BOT.CORN, and TOP.CORN to fine tune.
I was never able to get the geometry perfect, but it was much improved and good enough for me. At least the side image edges of the Regular aspect ratio no longer look curved.
Here are my before and after settings if you want to try them, but the best settings may vary from set to set. Some of my original settings were slightly off what is listed as default in the manual.
Before -> After
D01 - 086 -> 079
D02 - 013 -> 026
D03 - 043 -> 030
D05 - 042 -> 042
D06 - 034 -> 034
D07 - 034 -> 034
D08 - 009 -> 010
D09 - 009 -> 008
D14 - 126 -> 119
Also note that when I adjusted from a test pattern in FULL mode I got a different horizontal center value than the one listed. When I tested the settings with TV signals and different aspect ratio settings, I found that the right edge of the image was not always hidden behind the masking on the right. I had to set it off center to the right according to the test patterns to hide this. With the horizontal center setting above all inputs and view modes were good.