Question about Akai PTH5498 54" Rear Projection HDTV-Ready Television

1 Answer

Yellow spots Have replaced the convergence board six weeks ago and now in the left and right bottom corners of the screen I have a yellow spot - what now

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert that has over 500 points.

  • Expert
  • 337 Answers
Re: yellow spots

As long as your convergence adjust properly the board has nothing to do with the new symptoms,yellow spots are associated with the blue picture tube,you can check for dirt on the face of the tube,you can check if the spots move like water when you move the unit to see if is short in fluid,be careful when checking with the back removed.You can cover the face of each tube to see if the spots are in the other colors.Let Us know if you need more help.

Posted on Oct 11, 2006

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

1 Answer

The top 10 inches of my screen is breaking into separate bands of grn/mag/yellow that continue across the tv till half way and then it skews to the top right corner. It started doing this about 2 weeks...

Ur convergence is dead.U Know how to solders?Must replaced the 2 Convergence ICS and all it resistors.Tries Tv Repair, for the convergence kit to repair it ur self.The shop will cost u $300 for parts and labors.

Jan 27, 2010 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Blue spot on screen

Hi. this is called convergence failure. the convergence board is a circuit board that regulates the RGB(RED BLUE GREEN) streams that make up the color picture. If the convergence board chips are malfunctioning, you will see a distorted view of these RGB streams. This is what you are experiencing at this time.

Simply replacing the convergence board or chips will fix this issue.

Please rate and have a great day:)

May 17, 2009 | Projection Televisions

1 Answer

Hazy yellow spot in the left lower corner of the screen

It could be a cob web inside the tv or something laying on one of the guns, like a dead bug. If it's a cob web, you should be able to move the tv a little side to side and see it change from the moving air current. I would remove the back and vacuum off the lenses of the guns and look for cob webs. It's safe to touch and clean the lenses, just don't touch any electronics.If this doesn't fix it, it's probably fluid starting to cloud up in the guns or IC chip problems.

Jan 08, 2009 | Hitachi 53SBX59B 53" Rear Projection...

1 Answer

I have a convergence problem. My Sony KP-65WS510 has a picture that looks like 3-D and bows at the bottom and top of the screen. I already replaced both the IC's STK 392-560 (2 qty.) and check all six 3.5a...

You have a convergence problem. Here are some of the most common symptoms. 
Screen looks 3D
One or more colors can't be adjusted when using the convergence menu. 
Screen is bowed in but stationary.

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. 


You need to replace the convergence chips and convergence resistors. 

Check the site They have put together a kit for your exact model. The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc. Everything you need to fix it yourself. 

Dec 09, 2008 | Sony KP-57WS510 57" Rear Projection HDTV

1 Answer

Yellowish spot on the lower left hand corner of tv screen

Good Day, There is a device that can be used to correct your concerns. Symptoms can be correct by EE PROM CORRECTION TOOL:
LSUQ0100. Instructions included. Try calling 1-800-458-6053. It's under $100.00 and takes about 1 hour from start to finish. Good Luck, big IRISH.

Jul 07, 2008 | Panasonic PT-52LCX65 44" HDTV

1 Answer

Light green and pink spots on my hd tv!!!

Hi--Bought my panasonic pt-52lcx65 on sale for $2200 in 8/05. Replaced the lamp for about $300 in 1/08, just prior to Superbowl. Admittedly, this was to be expected after family members watched lots of tv over 30 months. However, two months later the blue spot emerged in 3/08, and red spot emerged 5/08. Set looks decorated by a Andy Warhol or Van Gogh wannabe. I'm looking for a fix it solution. Dr. Bob Heiliger, Lebanon, OH.

Jun 08, 2008 | Panasonic PT-52LCX65 44" HDTV

2 Answers

Light green and pink spots on my hd tv!!!

Tiny particles of dust on the light engine lens can cause this (and was a service call for me about a month ago), or possibly the expensive light engine.

May 12, 2008 | Mitsubishi WD-52525 52" Rear Projection...

3 Answers

Yellow spots

I have no suggestions but I am having the exact problem, yellow haze in the top right corner of the screen with a yellow line running down to the bottom of the screen. I guess we need to call tech support.

Dec 09, 2006 | Sony KDS-R50XBR1 50" HDTV

Not finding what you are looking for?
Akai PTH5498 54" Rear Projection HDTV-Ready Television Logo

Related Topics:

247 people viewed this question

Ask a Question

Usually answered in minutes!

Top Akai Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers


Level 2 Expert

77 Answers

matt martin
matt martin

Level 3 Expert

1187 Answers

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

Answer questions

Manuals & User Guides