Question about Akai PT4298HD Rear Projection Television

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Tv picture shaped like hour glass

For some reason my tv picture is shaped like an hour glass i cant for the life of me figure out why it worked perfectly fine a few hours ago and i turned it on now and i get this there arn't any options in the menu to change image demensions what is possibly wrong?

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Re: Tv picture shaped like hour glass

The link you posted has been deleted, so I cannot see the picture you posted. If the sides bow in like an hourglass and the red, green and blue colors are still aligned then there is a horizontal width or pincussion problem, but if the sides bow in and the 3 colors have separated and are no longer anywhere near aligned then you have a convergence problem, both of which should be serviced by someone with experience in servicing projection TV's.

Posted on Jul 05, 2007

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Likely convergence failure. Hard repair. Needs TV shop to repair. Picture will be partially hour-glass shaped and the will be multi-colored picture parts.

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If the hour glass figure is a seperation of colors that appear to be convegence mis aligned, then, the convergence ICs would be the problem. If the picture is clear and you have a bending on the sides then the pincusion circuit in the horizontal circuit is where to look. Be careful of this circuit, it does control the high voltage. The only way to have a board checked is to have an Authorized Service Center look at it. It does, however, sound like there is a cold solder joint in the power supply that has gradually opened up and now is permanantly open. Call Zenith (LG) to see who they recommend.

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