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If this is a Rear Projection T.V, your CRT is going bad. You can take the front cover off and make slight adjustments on the blue screen control to get rid of any lines, as far as the blurriness of blue, that part is 500 dollars to fix. The most you can do is just get rid of the lines. There's a black box. Make sure you are very gentle with your adjustments. Just turn it back to how it was if the screen shuts off. I recommend turning down the brightness of the T.V. before you do this repair.
Sounds like you need to do a color convergence. If you still have the owner's manual, it will give great detail on how to do this. The convergence menu is accessed from the video menu on the tv.
The tv has three color picture tubes, red, blue and green. The convergence alignment adjust each tube so that color from each tube overlaps each over to create a white image on the screen. Most tv's only allow you to adjust the blue and red colors.
Convergence should be performed each time the tv is moved and at least once annually.
According to the manual:
1) go to the "TV Main Menu"
2) Select "Screen"
3) Select Adjust Projection TV (obviously only if a projection TV).
This then allows you to adjust the TV's 3-colors. Selecting GREEN CENTERING brings up a control panel that lets you center the green projection tube on the screen. Selecting RED CONVERGENCE or BLUE CONVERGENCE lets you align the Red & Blue projector tubes. Centre the green projector tube 1st. Then adjust the red & blue until the test pattern on the TV screen appers white.
On front bottom panel remove behind it will be your focus/screen block cobtrol adjust Blue screen drive and focus also how to enter service mode for convergence with set off PRESS and hold at same time ch-&vol- untill set comes back on release you should now be in service mode for convergence.
I have a blurry screen and the top of it the picture is curved a bit. I was told to adjust the focus knob but I don't know where that is in the back of the TV. I took off the back and couldn't find it. I also tried to adjust the manual convergence and the red would not adjust only the blue would align. Any suggestions.
now one thing at a time. the picture that is blurr does it have red or blue lines on the rt or lt side it sounds like the convergence is out on the unit and that will cause the picture to be blurry. and is the big screen in warranty please let me know marty
Yes, Convergence settings should be tried first before any color adjustment or any fluid changes are done. Remember that there are 3 colors to notice. Red, Green, Blue. The Green is the only one that you can not move with an adjustment The Red and Blue is ligned up on green. Some cases it does matter how linear the Green color is across the board, just how close you get the blue and red on top of green is what matters.
What you may have needed to do was adjust the
green & blue crt screens to match the red.
Go into your picture menu adjust, turn color
all the way down to a black & white px. Now
adjust each crt screen so that you end up with
a true black & white px. Then adjust each
focus control to get a sharp px, have your
tv on a channel like the home shopping
network so you can adjust each crt focus
one at a time for clarity by cover the other
2 up. Then go back into picure adjust & turn color ahlf way up, you should see a better