20 Most Recent Akai PT4298HD Rear Projection Television - Page 2 Questions & Answers


Its usually the convergence board just replacing the old board with a good one should solve the issue. You can get the convergence board for the PT4298 at the following link just scroll down the page. http://www.tvrepairworld.com/samsung__akai_circuit_boards

Akai PT4298HD... | Answered on Jun 24, 2011


Your TV has whats called a convergence problem. You can get parts, instructions, and installation support from sites such as www.TvRepairKits.com

Akai PT4298HD... | Answered on May 01, 2011


The convergence circuits are needing repair. You can get replacement convergence boards from www.tvrepairworld.com

Akai PT4298HD... | Answered on Mar 22, 2011


pico fuses are resistor with a very low resistance value almost like shorted when read on a multimeter.this resistors acts like a fuse they blow when a short circuit occurs.they are also called fusible resistors...a defective pico resistors are open in resistance reading.they do not have any reading..150 ohms reading is not bad ..usually fusible resistors are installed on the positive supply of every components to avoid fire when a circuit malfunction...fuses are on the the board are labeled F with corresponding amperage rating!
good luck hope this helps!

Akai PT4298HD... | Answered on Mar 14, 2011


Hi.

If the colors do not match, then it is the convergence.

Let me know if you want more information on this.

Regards.

Ginko.

Akai PT4298HD... | Answered on Mar 05, 2011


CAN YOU SEE ANYTHING ON THE SCREEN? DOES THE MENU FOR THE TV COME ONSCREEN? IS THERE A BLUE SCREEN AT ALL? I HAVE SEEN MANY CONVERGENCE FAILURES WITH THAT MODEL THAT CAN CAUSE THE TV TO NOT POWER ON. IF YOU TAKE THE BACK OFF YOU WILL SEE A BOARD WITH 2 LARGE BLACK CHIPS LABELED STK392-040 IF YOU UNPLUG THE RED CONNECTOR AND THE TV TURNS ON THEN YOU HAVE A CONVERGENCE FAILURE AND THE 2 LARGE BLACK CHIPS WILL NEED TO BE REPLACED.

Akai PT4298HD... | Answered on Jan 07, 2011


Most likely the remote is not compatible with the Akai TV you have. Does it work correctly with the original remote?

Akai PT4298HD... | Answered on Jan 06, 2011


Not very hard,can u do the basic things,like taking things aparts and putting it back together again?Yes,Try website like Tvrepairworld.com to buy a whole refurbish convergence board for the replacement.The Akai/Samsung DLP tvs used the same tvs convergence boards.

Akai PT4298HD... | Answered on Dec 03, 2010


I am not sure how we fixed it my husband touched a button and we had sound again,

Akai PT4298HD... | Answered on Nov 26, 2010


The bulb that illuminates your screen needs replaceing. This blinking light is an error code that tells you when your bulb blows. Please have tech replace it or do it yourself its easy.

Akai PT4298HD... | Answered on Nov 08, 2010


Replace STK ICs,big black ICs will have PN# on them.
also CK low ohm resistors Mats has ICs 1-800-628-1118

Akai PT4298HD... | Answered on Oct 21, 2010


You need to Clean the Mirror and Top of Tube lenses of Dust and dirt.

Akai PT4298HD... | Answered on Sep 29, 2010


You have a bad Eprong which is a low price IC chip that controls your volume. You will have to replace this chip for around $15.00. A tech would charge about $50.

Akai PT4298HD... | Answered on Sep 08, 2010


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.

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 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

Akai PT4298HD... | Answered on Aug 14, 2010


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.

Akai PT4298HD... | Answered on Aug 14, 2010


Powerline regulator was bad!

Akai PT4298HD... | Answered on Aug 04, 2010


Ever had a followup on this?

Akai PT4298HD... | Answered on Jul 14, 2010


The tv DM power supply board,have about to dies leakage capacitors,just not dead yet.When those capcitors totally dead,finnally ur tv will not come on anymore.U know basic electronics and soldering?Just take out the DM power supply board,searches and replaced these defictive capacitors,they alway bulges up on it top or puff up on it tops.Tries Websites like Tvrepairworld.com,Tvrepairkits.com to buy a whole refurbish DM power supply board or capacitors kit to do the replacement.

Akai PT4298HD... | Answered on Jul 02, 2010


SAME PROBLEM RED LIGHT

Akai PT4298HD... | Answered on Jun 10, 2010


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

Akai PT4298HD... | Answered on Jun 06, 2010

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