Question about Akai PT4298HD Rear Projection Television

Open Question

Red line down the middle of screen

Convergence problem, I replaced the whole board it fixed the colors now have a red line down the middle of screen and when you set convergence, '20 mins. latter it's messed up again (doesn't stay set) perfect focus doesn't seem to work. what I'am I doing wrong (fairly handy) i have a 42" akai and while we were watching tv a red line appeared in the middle going from top to bottom. whats wrong??

Posted by on

Ad

2 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad
daniel719
  • 240 Answers

SOURCE: Thin red line down the middle of screen

Enter muye 1 / 8 /3
it puts you into convergence mode and clears out all bad magic foces data.
then run perfect focus to save new data.

hope this helps
daniel

Posted on Jan 12, 2009

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Hitachi 53udx10b screen is dark, very blue and red. there is a red wave across the top of the screen. there is a blue "ghosting" of any text on screen.


The tv have a problems known as a convergence picture problems,it is dead.Tv set have any colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?Yes,than the tv convergence board it is dead to causes all these problems.Now the tv set convergence board must have to be repair like replacing 2 STK convergence ICS and some or all of it resistors too.To fixed the tv set convergence board to solved the tv set convergence pictures promblems.The tvs shops will cost u like $300-350 for parts and labors.

Aug 18, 2011 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

Samsung HDTV model HCL4715w1 has horizontal wavy lines in the middle of the screen. Is it worth Fixing? Any solutions to this problem?


Yes,tv screen have R,G,B colors lines mis alingnments,have colors shaded pictures or 3D pictures look aike?Tv have a problems known as convergence pictures problems.The tv convergence board it is dead.This convergence board must require replacement of 2 STK convergence ICS and some or all of it resistors too.Fixed the tv convergence board to solved the tv convergence pictures problems.U have some mechanical skills like take things aparts and putting it back together again?Yes,try website like Tvrepairworld.com to buy a whole refurbish tv convergence board for the replacement.The DLP tvs brands names Samsung and Akai used the same tv convergence board.Or tries those tvs shops will cost u like $300-$350 for parts and labors.

Jun 28, 2011 | Samsung HCL4715W 47" Rear Projection...

2 Answers

The tv vision is red, green, yellow, orange, very very blurry, and it is not possible to watch the television. How could I fix it?


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

May 15, 2011 | Akai PT5492S 54" Rear Projection...

1 Answer

My RCA P52937SG projection tv. Picture distorted. I beleive it has to do with the green circuit / projector. Everything needs to be aligned to green. Green projector is on, but, in alignment screen I get...


The tv have a problems known as a convergence problems,it dead.Tv have colors lines R,G,B mis alignments,have colors shadow pictures or 3D pictures look alike?The tv convergence board is dead.The tv convergence board must have replace the 2 STK convergence ICS and some or all of it resistors too.To fixed the tv convergence board to solved the tv convergence picture problems.The shop,will cost u like $300-350 for parts and labors.

Mar 28, 2011 | RCA R52WH73 Projection Television

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...

2 Answers

I have an Akia TV DTV1080i and can't solve the color convergence as can't get the red and blue + to come together what should I try


This is a very common failure on Projection sets. Its called a convergence problem.

You may have one or more of the following symptoms.
  • 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.
  • No Audio / No Video - Makes Chirping Sounds

3b59090.pngYou can see some examples and find a fix here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Sep 26, 2009 | Televison & Video

2 Answers

RED CONVERGENCE SCREEN PATTERN BOWING AND CAN'T ADJUST


The most likely cause is shorted convergence chips and possibly a few pico fuses.

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 a convergenece repair kit with instructions from the links 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

You can see some more examples and find a fix herebb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jun 13, 2009 | Samsung HC-P4752W 47" Rear Projection...

2 Answers

Convergence problem


Here are some of the most common symptoms and example photos of a convergence problem

  • 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.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
Here is a quick test....

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

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

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

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.

Mar 05, 2009 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

Thin red line down the middle of screen


Enter muye 1 / 8 /3
it puts you into convergence mode and clears out all bad magic foces data.
then run perfect focus to save new data.

hope this helps
daniel

Jan 08, 2009 | Akai PT4298HD Rear Projection Television

1 Answer

Pt5598 rplaced convergence board no luck.


If the picture is still bowed, the power supply fuses are open.
Check the power supply on the red connector for + and - 20 volts.

The fuses are on the main board,are on the deflection module in the middle, tward the front of the TV. They should look like green (or brown) resistors. An ohmmeter check will show which ones are bad.
They should be 3.5 amps. Replace with 4 ohm GMA fuses with pigtails if you can't find picofuses. I also had a set that would fry the 1 ohm resistor on the 20 v supply. This was near the fuses.
I replaced the whole module to fix that.

I hope this helps. Lee, www.crazycomputers.com



May 31, 2008 | Akai PT5598HD 55" Rear Projection...

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

Related Topics:

148 people viewed this question

Ask a Question

Usually answered in minutes!

Top Akai Televison & Video Experts

Jaime Hernandez

Level 3 Expert

2318 Answers

The Knight
The Knight

Level 3 Expert

74251 Answers

Radames Pagan
Radames Pagan

Level 3 Expert

196 Answers

Are you an Akai Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...