Veritical bar in top right corner

Thetable should be in dark color (ie. Blue, green) and have white lines on thesides and top and bottom.

you'll need a new panel, or a new TV, sorry

Replace cyan drum

Horizontal centering is performed in the service menu. Beware! You can mess up a lot of stuff in this menu.

panel is done. economical to repair. new panel is about 90 percent the cost of the tv new

The screen does not work properly .Ribbon wire fails.

does the vertical lines appear like solid vertical bard infront of the pictire??

Cover green CRT lens with towel and see if red/blue video is normal......= bad CRT ?.............................T.

YOU NEED CHECK THE 3 CRYSTALS ( RED, GREEN AND BLUE). CLEAN IT WHIT "DUST REMOVER" ( compressed gas duster) AND REPLACE THE COLOR WHEEL.

Your set is starting to get a convergence problem and the only way to repair it is by changing the convergence IC's,(3)one for each color,the blue migh be showing more now but soon all 3 colors will be out of alignment and you will not be able to correct it with the custumer controls,is great that it has worked for so long without this problem,if you are familiar with tv service you have a place to check but if you are not too familiar be safe and call for help from a pro-servicer.Let Us know how it goes.