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You may try to get into the service menu and adjust screens/drives level(procedure below).
But first turn the color off completely and adjust you brightness to mid-range, what you`ll want to do is a grey raster or bring it as black and white as you can while adjusting the red/green /blue guns or tubes.
Also get a piece of paper and pen because you`ll want to record the original values of the items you may change.
You want to go into the adjustment menu.
Hope this will help Good luck
In quick sequence on the remote press: MUTE - 1 - 8 - 2 - POWER buttons.
The TV will turn On with the Service Menu displayed. ADJUSTMENT - TEST PATTERN - SET OPTION BYTE - FACTORY RESET
Select the function and use the VOL+ button to enter. Save settings and exit by pushing MUTE twice then POWER .
simple. easy. you have 3 screen adjustments. red green blue. turn color all the way down. you should then get just a black and white picture, but in your case, it will still be reddish. behind the speaker grill is an access panel for screen adjustment. remove speaker grill. remove access panel. you will see a block assembly roughly 6 inches square with 6 knobs on it. 3 are for screen, 3 are for focus. adjust until you have a black and white picture. then go into menu and turn your color back up. enjoy!
I don't know your model, therefore I will tell you genericaly what the problem may be.
There are many things that can cause this type of fault. The response of the video amplifier stages would have to be checked right up through to the output that drives the projection. it is also possible that there is a fault with the colour demodulator. If the set uses projection tubes it is possible that the tubes are weak, or there is dirt in the optics. Colour demodulation problems can also cause the colours to not be correct. Many models using tubes have an optical transparent cooling fluid in front of the tubes. This fluid may have to be changed.
NO !! You can't adjust that out. You have a convergence failure. You need to take it to a shop. You won't be able to fix it yourself. The more you adjust it the more ANY shop is going to charge you to fix it. Let me know how it turns out.
Did the ngineer say that it was problem with convergence pcb ?
To be honest the lil git hitting the screen is more likely to damage the screen than convergence.
Try going in to the menu then convergence & adjust red & blue to try & get the crosses white with no coloured halo around.
Post on here with results your model of tv is pretty straight forward I work for an indepedent tv repair shop the manuals are easy to get hold of thats if he even needs one.