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The tv have a problems"Known as a Convergence problems"it,dead.The tv convergence board reqiure changing 2 STK convergence ICS and some or all it resistors to solved the convergence problems.The shop will cost u $300-350 for parts and labors.
You have bad convergence IC's. Replace both the red and blue drive chips. They are easy to spot. They are mounted to large, finned heat sinks. The # on the chips starts with "STK-" and then there are numbers following. Both red and blue use the same part. There are 20 or so pins to unsolder\solder. These parts are available to the consumer from tritronicsinc.com. Good Luck!!
This is a convergence problem and is either bad connections at the convergence ICs or defective ICs. If you can solder, you can repair this yourself. Let me know if you wish to repair this and I can provide you with additional details.
There is a manual convergence setting. Press Menu until you see the option of convergence.
Save settings by pressing Power until you see Save Ok. You can exit the convergence screen by pressing the PIP button. 0 reloads the convergence.
It will periodically go out of wack again.