Question about Akai PT4298HD Rear Projection Television

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42" HD AKAI

TV powers up - with timer going on, but have no sound or video - any ideas would be helpful, thanks

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This model also has a high rate of leaking fluid out of the CRTs. When this happens, the fluid drops on the CRT driver board (the board connected to the neck of each of the three tubes) and usually shorts out the driver IC ( 9-pin chip screwed to heat sink) and trips the protection circuit. The timer light will blink, but startup is halted by the microprocessor to prevent further damage to the television. This is usually easy to detect by either fluid evident on the board or in a small puddle underneth one of the tubes. If this is the case, this is not an easy fix and will have to serviced by a repair tech....

 

Hope this helps....  

Posted on Oct 21, 2007

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Replace STK392-040 convergence IC's w/ first quality parts.Do not use generics,I use Panasonic with no recalls.Locate fuse

device that is open (bad) in power supply circuit.Usually a small, soldered-in pico fuse.Check any/all fuses.Re-check convergence alignment when finished.

Posted on Oct 18, 2007

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MY TV HAS THE SAME PROBLEM ..  SAME TV   AKIA

Posted on Oct 11, 2007

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My experience with these units,the signal board is defective for the prob. described john

Posted on Sep 12, 2007

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