Question about Hitachi 53UDX10B 53" Rear Projection Television
You could have some type of convergance (three colors, three guns) problem. Also a misaligned horizontal or vertical oscillator.Ceck to see if any of tiny magnets around the bell of picture tube or next to coils in and around bell of pix tube are missing.
Posted on Jul 30, 2008
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Posted on Jan 02, 2017
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This sounds like your convergence correction amplifiers have malfunctioned. These Integrated Circuits often burn out after a few years (STK392-110) they can be replaced with a higher version (STK392-150) However it is important to have the biasing circuitry checked to make sure nothing has burnt out as a result of the ICs malfunctioning. If you have a background in electronics you can repair this problem with very little effort, however if you do not have a background in electronics, I would suggest that you have your TV serviced by a qualified TV technician.
I hope this helps,
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