Is it rear projection? if yes try to open the front screen panel, there is a mirror inside which reflecting the picture from RGB Projecting source onto the scren. In same case the mirror is unclear, very dusting, try to clean the mirror use glass cleaner then look at the screen it should be same as the mirror full of dust, clean it too and the last there are 3 projecting unit ( R G and B) as the picture source clean the lens with glass cleaner
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Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/
Thanks for using FixYa. To reset the picture you’ll
need to reset all the Video menu options to their original factory setting for
which you’ll need to follow this step-by-step procedure--- Press the Menu button and then use up or down arrow button to
select the Video menu. Now press the right arrow button and then use up or down
arrow button to select Video Reset then press the right arrow button to reset
the Video menu options to original values. If still the problem persists, then you’ll need to check
for local interference such as an electrical appliance or power tool and also
check the antenna. If required change the direction of the antenna. To resolve the issue of Blurry Screen, first check whether
all the cables from your dish network are fine and connected firmly. If yes
then you'll need to pull off the front of the TV, behind the speaker grill
there would be a panel. Remove the panel and check for a black box hanging over
there. It has 6 controls on it, 3 are marked as focus and 3 as screen. You'll
need to adjust the screen. If you turn these too high you can damage a tube. So
we are doing real small adjustments. Turn the color off on the TV and adjust
the red, blue & green controls up till you get a fine picture. Also adjust
the focus until you get a clear picture. And, if it doesn't resolve your issue then it is an
intermittent blue picture tube, a bad blue driver transistor on the CRT board,
a bad connection on the blue CRT board, or a problem in the RGB coming from the
video jungle IC. A set this age, most likely will run about 300-500 bucks to
have this problem fixed, unless it is the picture tube.
Please do accept the solution if
the issue is resolved or else revert for further assistance.
CONVERGENCE problem.. with convergence problems on these sets i always start the diagnoses with some questions. IS the picture curved in at top and bottom? or is it just in certain parts of screen. Go to setup in cutomer menu do you have the convergence option in the menu. if you do not try reading the fl231 fuse problem in the tips and tricks section of this website. that is a simple and inexpensive repair. if you do have the convergence option then you may have a problem with one of three different cuirit boards
i was having problems in the tv menu getting full screen. no matter
what i did there was two black bars on each side of the screen. i have
att u verse so i went into the cable menu to options. In the options
tab i went down to system options then to aspect ratio. in this screen
you get a few options like 4:3 standard definition and 1080i on high
def screen. I chose 1080i high def and then played with the zoom
function on my remote and the problem was solved. hope this helps