Akai PT5598HD 55" Rear Projection HDTV-Ready Television Logo

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Posted on May 19, 2008
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Drooping screen top of screen seems to be "drooping" convergence (blue) seems to be way off. am unable to realign. is there a way to go back to factory defaults?

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  • Master 4,234 Answers
  • Posted on May 19, 2008
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Joined: Mar 17, 2008
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This is usually an indication of either bad connections at the convergence ICs or defective ICs. If you can solder, resolder the connections first. If that fails to resolve the problem replace the ICs. These will be large black ICs attached to a heatsink and marked STKxxx.

Dan

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0helpful
1answer

Currently, the red and blue color alignment is off and I am unable to adjust this. There is a red shadow with a blue hue. Have tried to realign the colors but can not get the red to move.

Ur tv have a convergence problems,it dead.The convergence board the 2 STK convergence ICS and some or all it resistors are dead.All these parts must be change to get ur convergence back to normal.The shop will u $300-350 for parts and labors.
0helpful
1answer

Conversion-----the red lines are distorted so badly they won't move at all. I've managed to line the other lines up. The top left quadrant has drooped so badly that they will not adjust back. The bottom...

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV 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, Akai, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit from the link below.

Common Symptoms include....
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on - TV may also make a chirping noise.
Here are some photos of convergence problems.

49abec3.jpg
f0add3d.jpg


Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a solution

93a1209.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from www.TvRepairKits.com
2helpful
1answer

I've a mitsubishi ws-65909 and the picture is out of synch. Went to the convergence menu and I'm unable to get the blue in line with red and green and the blue convergence grid can't seem to be realigned....

Hi my name is Roety,
I can help you with your issue ,
If you can solder you can replace the Convergence ICs
A repairman would charge about $400 to do it for you 
 
 
If I have helped you with your issue please click accept.
If you have more questions you can still respond until this post expires,
I will reply asap
Thanks

I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771

0helpful
1answer

Convergence

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projeciton sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some photos of convergence problems.

42d3683.jpg

7859b01.jpg

e87380c.jpg
Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a fix

69189a5.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.
0helpful
1answer

Colors not converging top and bottom of screen

need to use your remote to converge....it should be indicated how to converge in your owners manual
1helpful
1answer

Red/green drooping L top corner

i have found when samsangs convergence are out of range perfect focus will fail. if the are out of range a technician will try to adjust the set in service mode. store these values and then this will be the base for the perfect focus. If the set has a bad convergence cuircit then they have to be replaced.
0helpful
1answer

Convergence

One of your convergence IC's has burned out and needs to be replaced. A good rule here is to go ahead and replace both STK392-110 IC's with the new improved STK392-150's. If you have never replaced convergence IC's and realigned convergence circuits, allow a qualified tech to handle it for you.
2helpful
1answer

Mitsubishi VS 4552A

One of your convergence IC's has either cracked loose or burned out. The IC will have to be resoldered or replaced and then the convergence circuits realigned. If you do not have experience in repairing convergence circuits then have a qualified tech handle it for you. This is by far the most common failure in the projection sets and a good tech can have it fixed in about an hour and a half. I charge $150 for that but shops in your area will vary, so call around.
0helpful
1answer

43H70 Blue Convergence out of line and will not line back up

If the blue colors will not line up, and the blue appears to sag inward from one or more sides, then you can bet that one of your convergence IC's has either cracked loose or burned out. The IC should be resoldered or replaced and the convergence realigned by someone experienced with projection TV convergence circuits.
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