Question about Akai PTH5498 54" Rear Projection HDTV-Ready Television

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Auto Focus Stoped Working

The Auto Focus bar appears but theres no improvement in the picture it stays the same. Also picture appears to have a slight 'washed out' look. TV is 3 years old model Akai 1080I 54 in rear projection.

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If the convergence is very far off the convergence ICs are bad and need to be replaced first. If the convergence is close and it wont correct it might just be an insect or some dust on the sensors at the 12, 3, 6 and 9 o'clock posistions behind the screen.

Posted on Aug 22, 2008

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I have seen two different things cause this. The first and most common is the electrical failure of one or both convergence IC's. A handful of times, the data in the DCU became corrupted and I was able to enter the service mode, go to manual convergence and correct the one location that was off.

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You need to replace both convergence ICs they are STK392-110. You can get replacement Ics with free instalation instructions with pictures at the following link
http://servicemanuals.vstore.ca/

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I have the exact same problem.......you just explained it a hell of a lot better than me. In the magic focus was red broken up, blurred and flashing as well as only 3 bars???
If you solved your problem could you please get back to me.
Thank you
Randy
gardner7768@msn.com

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1 Answer

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