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

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Double images red and blue lines on left and right side of screen

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  • Akai Master
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You need to replace both convergence ICs thy are STK392-040 you can get replacement ICs at the following Link and they will provide free instalation Instructions with pictures so you can do the repair yourself. heres the link.
http://servicemanuals.vstore.ca/

Posted on Jun 15, 2008

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The left side of the picture is distorted with a double image. The right side is fine. As things such as the stock symbols on CNBC scroll across from right to left on the screen, they start out looking...


Hi,

It's a convergence issue. Go into the main TV menu under video settings and look for convergence. If it has an auto convergence select that and wait a minute the TV will adjust itself and give you a clear picture.
If the TV does not have an auto convergence and just regular convergence than select this. It will give you a grid pattern on your TV and you have to move the cursor (using TV remote) and adjust each "point" so that each line is perfectly white. If you notice red or blue anywhere on that "line" then you have to adjust using the up, down, left and right arrow keys to "line up the red and blue lines with the nearest white line. It takes time and patience to do, but when completed, all lines on the grid pattern should be pure white and you will have a great looking picture.
You have to do this will all TV inputs (Video1, Video2 and so on) the reason Zoom looks good, is because you never used that screen as much and so the lenses didn't have a chance to get out of synch.
RPTV's are made of the three lenses (red, Blue and Green) and as you watch TV, these lenses slowly get out of alignment. So you should do a convergence about twice a year to make sure nothing is out of whack.

You can pay somebody to do it, but may cost you like 100.00 or do it yourself, it is very easy just tedious and time consuming. If you have the auto convergence than your golden because this is the easiest way to "reset" the TV.

Hope this will help in solving the problem....

Jan 12, 2011 | Hitachi 51GWX20B 51" Rear Projection...

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Double images red blue green lines


My picture screen has double images red,blue,green. The screen looks 3D

Dec 28, 2009 | Sony KP-53HS30 53" Rear Projection...

1 Answer

Color blue will not adjust on crt color conergence adjustment , picture on tv is double with blue on right side, auto/manual mode , the color blue will not adjust on right or middle side from side to side,...


This is a convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually charge between $200-$300

Sep 27, 2009 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Samsung HCN4727W Rear Projection TV, green screen, audio works


These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai2_bing.gif,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jul 10, 2009 | Samsung HL-R4667W Rear Projection...

1 Answer

Color is mostly yellow and blue with double images


you have lost the convergence IC`s in your set, this really isn`t a diy repair unless you are very proficient in un-soldering and re-soldering components, once replaced there will be an alignment procedure as well that will require the service manual also, if you have more questions feel free to ask away, video-tek

Feb 04, 2009 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Replaced Convergence but pictures still display with double images


i went to converge my mitsubishi ws 73903 and the blue line wont go down to match the other ones

Oct 09, 2008 | Mitsubishi WS-73903 65" Rear Projection...

2 Answers

I am having a shadow/double image problem only on the left side of the screen


Yes its called the Convergence ICs there are two of them they are mounted on a huge heat sink with the part number stamped on them they will have a STK number such as STK392-110. they have 16 pins on them there are two cost around 10 dollars each, you will also need some Heat sink Compound. Just look for the largest heat sink in your tv and thats where they will be. However if you can move both red and blue colors up,down right and left its probaly not your ICs. Do the colors move in all directions? If so you probaly just need to do a multipoint convergence adjustment.via of the service menu. Hope this helps. let me know if you need anything further.

Jan 11, 2008 | Sony KP-41T65 41" Rear Projection...

1 Answer

Mitsubishi VS-60111 picture distorted


how do I manually switch my t.v. from 480i to 1080i on dtv with remote.

Dec 31, 2007 | Mitsubishi VS-70707 70" Rear Projection...

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