Question about Akai PT4298HD Rear Projection Television

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Akai Rear projection 42" hdtv

Picture looks 3d with double image. also bowed in center of screen.

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Hi trev-n-tina,

With the indulgence of melnavz,

Your concern is a common problem with Akai, Samsung and some other rear projection TV units.

Normally this involves the Convergence ICs/circuitry and would require replacement. In some case, this would involve coolant fluid leak.

Repair of course would require that you be familiar with electronic circuitry and components, use of a DVM, a soldering iron and a service manual. Should you be uncomfortable going this route, you may need to seek the services of a qualified professional. This might really be to your advantage since parts sourcing may be a bit of a problem as well as the alignment procedures after repair.

I doubt if the parts (if ever available) would be that expensive. It may be the service fees that would be of concern. In some instances the parts would only be available after some time (due to backlog of orders). With the downtime and repair time in mind as well as the total cost of repair, perhaps you may want to reconsider repair and simply purchase a new one to save you the trouble. I have to emphasize, the problem is repairable but other issues have to be considered.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Mar 05, 2008

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Hello!

Please try to unplug the power outlet to reset the setting automatically. and change the image setting of the TV. However, if this donot work. the projection of the TV maybe cause damage. On that case the error maybe in either in the horizontal or vertical setting of the tv. In this case you need a service tech to check the circuit inside. this needs a series of testing each parts of the TV. If the TV is less than a year then you can claim a warranty howver if this more than one year, service tech im sure it level on very reasonable cost same very cheap labor cost.

may this help, melnavz

Posted on Mar 05, 2008

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1 Answer

There is an arcing bow across the screen and image, text doubling in red and green, images look like an old 3D comic print.


Please do us a favor and rate this solution after reading.

Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both. Repair kits with instructions are also avail from www.TvRepairKits.com

Common Problem #1) Convergence has gone out

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 projection 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 pics of convergence problems.


7859b01.jpg

e87380c.jpg
69189a5.pngSOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

69189a5.pngSOLUTION

You 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

Please do us a favor and rate this solution after reading

Feb 06, 2011 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

Picture looks like it is warped at the bottom and top of the picture. Have picture, no problem there, just not a centered picture anymore. Looks like the top of a half moon on the top and botom.


This is a very common failure on these projection sets and a fairly simple DIY fix. All projection 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 images of convergence problems.


7859b01.jpg

e87380c.jpg
69189a5.pngSOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Or goto the site www.TvRepairKits.com for the parts and instructions on how to fix it yourself.

Dec 28, 2010 | RCA HD52W59 HDTV Projection Television

1 Answer

Getting a 3d image picture and a bow at the top and bottom of screen what is it?


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 projection 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


a56fe79.jpg

6d0da0b.jpg

fcabb43.pngCONVERGENCE SOLUTION

You can see some more examples and find a fix using this link on Fixya - CLICK HERE

Feb 03, 2010 | Sony KP-57WS510 57" Rear Projection HDTV

1 Answer

I have a HCN4727w samsung. Red/green shadowing. Bowed image


Projection sets have two very common problems.

The first common problem is convergence

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,Akai,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...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped or bowed
*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

Jan 17, 2010 | Samsung HCN4226W 42" Rear Projection...

1 Answer

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...

2 Answers

PT4298HD Double image


BINGO thats exactly what i get paid to do same price 285.00

Nov 30, 2008 | Akai PT4298HD Rear Projection Television

1 Answer

SPEED BUMP OR BOWING


Your convergence chips and convergence resistors are going bad. When they fail the screen colors will look distorted/3d looking. Another symptom is one or more colors can't be converged using the convergence menu. You can purchase the parts over the internet. Just make sure you get Sanyo brand convergence chips and the correct flame proof resistors. You can also check the site www.TvRepairKits.com for a kits.  Just make sure you replace both of the convergence chips and all of the convergence resistors. 

Aug 25, 2008 | Philips 60PP9202 60" Rear Projection...

1 Answer

Picture is suddenly "bowed" and the convergence is askewed at everypoint but center.


the problem is the EW cicuit of the deflection cicuit. this is a component level repair call a tech. the EW or East West correction is apart of the horizontal deflection. IC431 is the pin amp.

Feb 06, 2008 | Akai PT5598HD 55" Rear Projection...

1 Answer

Akai


yep you need convergence amp replacment for your set..very common prob call experienced repair person for this job use original replacements....john

Jul 31, 2007 | Akai PT4298HD Rear Projection Television

1 Answer

Akai tv


have a good tv guy repace you convergence amp's john

Jul 31, 2007 | Akai PT4298HD Rear Projection Television

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