Question about Akai PT4298HD Rear Projection Television

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Blue Line Our TV is three years old. All of a sudden it has a fairly large blue line running vertically down the center. We have no idea what this is or how to go about fixing it. Is this a repairable problem? The only thing we know about projection tv is that we have heard bulbs got out. Does this problem sound like a bulb issue? Appreciate any and all information. Thanks.

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Re: Blue Line

Sorry no bulb issue here. theres a vertical sweep issue though. if your not a tech i wouls sugest that you find a good one as this is a solid state set and there are no user replaceable parts inside, so you cannot service yourselfs unless your trained to do so. please seek out a trained tech to assist you in this repair.

Posted on Sep 22, 2006

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Convergence lines are SLANTED. Red line is above

Your TV most likely a convergence failure. ( common 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.
Here are some photos of convergence problems.

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 will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Apr 26, 2009 | Hitachi 53FDX01B 53" Rear Projection...

1 Answer

Mitsubishi tv model wd 73727 and how to take tv apart to clean marrow

my mitsubishi 73" set is 4+ years old. all of a sudden the color is all wrong. after a couple of minutes of clear picture the colors change--blue is green and red is yellow. a little while later everything has a red tint to it and there is a line going down the center of the screen. to the left the picture is still relatively sharp, but the right hand side is terrible. I'm hoping this is just the lamp.

Woodland Hills, Cal.

Apr 12, 2009 | Projection Televisions

1 Answer

We have a panasonic viera flat screen tv which has developed a vertical blue line that runs down the middle of the screen. any ideas?

sounds like it could be your flyback going out (cost around $70.00) for part if you replace yourself!

Dec 06, 2008 | Projection Televisions

2 Answers

Panasonic PT-47X54J Not working

I can't tell you how to fix this set, but I can tell you that its not a "lamp" issue as this doesn't have a lamp. Its a 3 picture tube projection TV. the three tubes are in a red green blue format, and average about $175 for each one, not including the labor to install them. your problem, may not be the tube, but just a power supply problem, but there is a chance it is.

Nov 21, 2008 | Panasonic PT-47X54 47" Rear Projection...

1 Answer

Blue focus

sounds like the place you took it to get servicer turned up the screen control when you had no picture problem that was a no vertical causeing a vertical line. but the service center let it run too long causing the line to burn in the tube. very bad for a repair center to do this. cant believe the got you for 600. thats well overboard. now you got a blue convergance problem because its erroring out durrent the blue reading in the test. what you need is to take off the screen turn on the tv. look in each tube for that line. now you can tell what tube needs replaced. then check convergance ic's they are big black ic's that stand up and mounted on a heat sync for cracked solder. might want to go ahead and solder them anyways in case you cant see or dont know what your lookin at. also check all the resisters in that area for burns. if that does not fix your problem, try replacing the ic's using mcm electronics. they are on the web. and the part number from the front of the ics.

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

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No picture but has blue green and red light down middle and sound


Most likely a blown Vertical deflection output IC. In most (but not all) Panasonic, the vertical IC is an AN55XX.

Repairs should be fairly easy with basic knowledge of electronic circuitry and components and a little soldering. I would expect the IC to be readily available at any electronics part store. Should you be uncomfortable doing a DIY, perhaps your best bet would be to seek the services of a qualified professional.

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.

Apr 28, 2008 | Panasonic PT-51HX43 51" Rear Projection...

1 Answer

Blue shadows/ghosts

how old is the tv ??
if this tv is older than 5 years it may need to refill the liquid on the proyection bulbs and/or could have contaminats in the fluid causing the ghost and to fix that you will need a professional person to do it

Apr 03, 2008 | Toshiba TP55H60 55" Rear Projection...

1 Answer

Showing black screen with a blue line

Is the blue line running straight across the middle of your screen? If so its a vertical deflection problem. Possible bad Vertical output IC

Feb 20, 2008 | Panasonic PT-47WX53 47" Rear Projection...

2 Answers

Blue Lines streaking in from left side of 70 inch Sony HD TV

okay my friend your tv vertical circuit is begining to get faulty you could be having some bad caps or the vertical ic is defected have a tech check your tv for repairs.if you are not a tech you cannot repair the set by your self.good luck.

Jun 25, 2007 | Sony Grand WEGA KDF-70XBR950 70" Rear...

3 Answers

TV going Blue

malfunction of the convergence ics

Dec 27, 2006 | Sony KP-57WV600 57" Rear Projection...

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