Question about Akai PT4298HD Rear Projection Television

1 Answer

Convergence problem: Green won't adjust

I have the Akai PT4298HD, recently the green convergence won't adjust. So what part should be replaced? And where can it be purchased? Thanks.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Akai Master
  • 8,617 Answers

You will need to replace both STK392-040 ICs you can get replacements at the following link with free instalation instructions
http://servicemanuals.vstore.ca/

Posted on Jun 04, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My akai pt4298hd is out of zoom and


akai is a samsung tv. you have a defective convergence board. suggest local service center. sorry

Nov 14, 2009 | Akai PT4298HD Rear Projection Television

1 Answer

Red, Green convergence lines are wavy


Projection TV sets have two very common problems listed below.

Problem #1) 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
*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

Sep 16, 2009 | Akai PT4298HD Rear Projection Television

1 Answer

Akai PT4298HD green convergence problem


http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Jan 01, 2008 | Akai PT4298HD Rear Projection Television

1 Answer

Convergance problem red, and green won't adjust


this is a common problem for all projection TVs the convergence ICs need to be replaced. Its an easy fix if you can solder. Let me know if you need further information or a link to where you can order replacements.

Nov 10, 2007 | Akai PT4298HD Rear Projection Television

2 Answers

Seeing red and green colors on screen


your tv is having convergence problems if you can't adjust it out with the customer controls you  probably will have to have the convergence circuit repaired witch should cost about $300

Oct 16, 2007 | Akai PT4298HD Rear Projection Television

1 Answer

Green Shadowing Around Images On Akai PT4398HD


your convergence amp's are defective this can usually be repaired for a few bills. easy fix for a qualified repair person...john

Aug 31, 2007 | Akai PT4298HD Rear Projection Television

1 Answer

Convergence


Seems like you need to replace its convergence amplifier ICs (2 pcs). The convergence amplifiers are attached vertically to two heatsinks. When replacing these, remember to reapply thermal paste (white paste for better heat transfer from IC to heatsink). If you don't replace these, over time other components will be affected.

Aug 26, 2007 | Akai PT4298HD Rear Projection Television

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

2 Answers

My Picture is in Red and Green??


This is a convergence problem. From your menu, go to Menu, Function, Convergence and then use you remote to try to adjust your colors. If you can not get them to line up this is a problem with the convergence board. The convergence amps (STK392-040 x 2)are internally shorted. These can be replaced or the whole convergence board can be replaced. It's cheaper to replace the amps, but more convienent to replace the board (especially for the less electronically inclined!! :) Hope this help you out....

Aug 22, 2006 | Akai PT4298HD Rear Projection Television

1 Answer

Green projector alignment


convergence IC'c have three amps inside them. The green is fixed but still has convergence correction . Each IC uses the extra channel for the green. So if you are not a tech ask the repair person how much it will cost to replace both IC's. Remeber a TV set is not a place for an experimenter or a handi person, unless you want to get seriously killed!! Good Luck

Aug 07, 2006 | Akai PT4298HD Rear Projection Television

Not finding what you are looking for?
Akai PT4298HD Rear Projection Television Logo

Related Topics:

67 people viewed this question

Ask a Question

Usually answered in minutes!

Top Akai Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

seerads

Level 2 Expert

77 Answers

matt martin
matt martin

Level 3 Expert

1191 Answers

Are you an Akai Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...