Question about Akai PT5598HD 55" Rear Projection HDTV-Ready Television

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Auto Focus not working.

I have an AKAI PT5598HD When I try to use the auto focus, I get a message on the screen that says "No sensor data". Any suggestions? I'm pretty handy and want to try to fix it myself. Thanks!!

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  • 4,402 Answers

I think your having convergance problems.

http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
· http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Posted on Dec 17, 2007

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AKAI PT5598HD - I HAVE REPLACED THE CONVERGENCE BOARD AND PICTURE AND SOUND ARE "ON" BUT "PERFECT FOCUS" WILL NOT BRING BLUE INTO FOCUS. "PF" STOPS AT 37% - RED AND GREEN PATTERS ARE SHARP BUT BLUE IS...


Most of these sets have a SCREEN/FOCUS block---usually all black with 6 controls----you need to look close at it as one row of 3 will be screen controls---don't touch those----the other 3 will be FOCUS- MARKED in little letters will be r,g,b(red,green blue). TWO ways to adjust the focus: 1. carefully locate the blue focus control and adjust to see if blue will improve in focus. 2. each of the 3 large lens where the picture comes out have a wing nut and a slot--you can loosen the nut and turn the lens---usually best focus that way is if the part that turns is in the middle of the available area to move it.

I should point out that all projection sets intentionally de focus the blue--the lines if blue should be clear but never as perfect as green or red--this is normal.

I do this here for free so if this has been helpful give me a vote here.

if you need direct help:
etower.766@netzero.net

Aug 20, 2009 | Akai PT5598HD 55" Rear Projection...

1 Answer

The picture went fuzzy (color alignment).


craighirman,

try going to the antenna input from the menu screen, then trying to do the auto focus, or manual focus. My Samsung won't let me do the auto focus unless I'm looking at the antenna for some strang reason.

Oct 18, 2008 | Samsung PCL545R 54" Rear Projection...

1 Answer

Picture on AKAI 54 inch HD ready tv is not square.


akai is not a good brand of tv to start with they seem to have alot of problems and finding parts is impossible to do

Oct 16, 2008 | Akai PT5598HD 55" Rear Projection...

1 Answer

Auto focus problem


The auto focus is not actually focusing the tv. When it is running it is adjusting the convergence. Most likely the repairman that replaced your tuner didn't plug the sensor wires back in. I would call him back out and have him hook it back up.

There should be a convergence menu in the tv. Use the samsung remote and go into the menu and look for convergence.

Sep 11, 2008 | Samsung HCM553W 55" Rear Projection...

1 Answer

Auto Focus Stoped Working


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.

Jun 04, 2008 | Akai PTH5498 54" Rear Projection...

1 Answer

Describe your Akai PT5598HD 55 in.


looks like you have a convergance problem akai is made from samsung
· http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
· http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Dec 17, 2007 | Akai PT5598HD 55" Rear Projection...

1 Answer

AKAI 54" rear projection TV


The convergence sensors either need to be re-initilized or one of them is bad. The service menus needs to be acsessed to re-initilize the sensors.

Apr 08, 2007 | Akai PT5492S 54" Rear Projection...

1 Answer

AKAI PT5598HD


Your set has what is know as "convergence problem" because of the bowed lines and ghost in different colors,is really not an easy solution,the set should have 3 amplifiers(one for each color)and they need to be replaced with an exact replacement,sometimes just by replacing them the aligment should be close but soemtimes you nned to get into the service menu to do some adjustments,the amps(IC's) are mounted on heat sinks and all 3 have the same part number on its face,they normally read STK--- ---,every set uses different amps,If you are familiar with tv service you have now a place to start working but if you are not too familiar be safe and call for help from a servicer.Let Us know if you need more information.

Oct 31, 2006 | Akai PT5598HD 55" Rear Projection...

1 Answer

Actually...it's a Akai PT5299HD


I HAVE A AKAI PT5299HD TV AND WHEN I PUT ON THE AUTO FOCUS THE TV KEEPS TRYING TO FOCUS ENDLESSLY BUT DOES'NT FOCUS. IS THERE A WAY TO MANUALLY FOCUS THIS TV-MY WRITING ON THE SCREEN IS BLURRY?

Jul 31, 2006 | Akai PT5598HD 55" Rear Projection...

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