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

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Wavy picture with a lot of red, perfect focus states no sensor data

System was built and purchased in 2003. I was working great without warning it started having a wavy picture with an outline in red. I tried different things on the menu the main problem that I noticed is the fact that the perfect focus does not respond and states no senser data.

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Convergence ic's need to be replaced. If you pay over 300 bucks your getting ripped! Good Luck

Posted on Aug 26, 2006


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Posted on Jan 02, 2017


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Flickers after 5min of use. Perfect sound, turns on fine and excellent picture quality when in blue screen menu mode. Why?

This intermittent problem is very difficult to rectify. Just contact the authorised service center for Hitachi at your town. The work is really a skilled one, that a user cannot do it with ease.

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You have a bad sensor, a bad digital convergence board, or the new board is not working correctly. I would start by swaping out the convergence board or exchange it for another one. Good Luck

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Have a 2003 cadillac cts my car will crank but not turn on some times it will start but i will be driving and get to a red light and it will completly shut down on me it does not always do this at times it...

how many miles are on your car ? will it start up after it shuts down or do you have to wait 20 or 30 min. had a problem like this with my own car it had 1600,000 miles on it. do you have any warning light on dash when this happen, if not, it's most likley it is the crank position sensor. it's about $60.00 at the dealership, not fun to put in. also could be a fuel pump problem, have a pressure test done on pump first before you buy a pump it is about $400.00 + $600.00 to put in. I haven't seen to many pump problems without a lot of other issue while driving. If warning light are on, have the computer scanned first.

good luck bro,
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Three intermittent warning lights

I would think a sensor is going bad , but ,without testing that is just a guess , just like the dealer tech , assuming it's a module or a fuse ! With the light's on checking for DTC'S - diagnostic trouble codes would be a real good first step . The dealer tech should have hooked up the Tech 2 scan tool an checked codes an look at sensor data parameters ....

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Screen Out of Focus with Wavy Lines - Perfect Focus Will Not Corr

This is a common problem. Its called a convergence failure.

Problem #1) Convergence


  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...


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When the wavy light is on with parenthasis around it and at the same time the (!) and (P) lights are on, this indicates a serious brake concern

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1 Answer

Perfect focus reads "no sensor data"

hope this helps check out this above links

please check out this links

for convergence board ics reparing it your self

and for convergence settings


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Akai PT4298HD projection tv

convergence must be adj then saved then magic focus
if cannot be adj chips need to be replaced.

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Im trying to install that same board on the same tv how did you do it?

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