Question about Akai PT4298HD Rear Projection Television
I have an Akai 46 inch rear projection TV. The red images is curved up at the top sides and curved down at the bottom sides. I have tried using the convergence to adjust the red and blue colors. The red cannot be adjusted on the sides. I can get the center squares to align, but not the sides at all. When I move to the blue, the squares are all green and no adjustment can make the blue even show up. When I go to perfect focus, it goes through the process, but does not improve the red color.Any ideas?
Yes! an idea that the flyback transformer is shot!
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Posted on Aug 29, 2009
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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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