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

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Blue color Have no blue color in picture. went into convegence service mode 1-8-3 and the blue gun does not show up. Called a TV repair shop was told the crt was known on as he called it "cheap models" to grow algae and wanted $275 + tax to repair if brought in to his shop. Is there any way to fix this cheaper, or do I need to buy a new 1080p tv?

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Re: Blue color

As far as alge ...i cant comment on that. it just sound like your blue tube has quit altogther/...yes they can be quite expesive..however it could be crt you a new one...LOL

Posted on Dec 07, 2007

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How do I adjust the manual convergence? I am in the settings, but my TV is not letting me adjust anything. I chose the "reset to factory" choice, but that didn't fix the red/green shadows

Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from and do the repair yourself. Its a fairly easy DIY fix.
Here is an example photo.... louis66_0.jpg

Aug 27, 2011 | Philips Magnavox 51MP392H Rear Projection...

3 Answers

TV rca hd 52w59 has convex picture. can I fix it.

If convergence adjustment did not correct the problem likely the convergence IC's have failed and will need to be replaced along with a few defective resistors in that circuit. If you have never attempted TV repair this would not be a good repair to start on.

The only way to be positive of the problem is to have the circuitry diagnosed by someone with the proper TV test EQUIPMENT to determine what parts that are no longer within specs.


Sep 29, 2008 | RCA D52W19 52" Rear Projection Television

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...

1 Answer

The picture started getting a triple image (everything was outlined in blue and yellow). We had a board replaced by a tv repair service, over $300 and the tv was ok for about 80 hours. (warranty on new...

Ur tv convergence board that was replaced for ur tv.The 2 STK convergence ICS was old it is not new it is those 2 STK convergence ICS on the tv convegence board is dead again and some of the resistors on the board maybe shorted and dies also must replaced too.The tv convegence board was put on ur tv those parts on the convergence board are old components parts,ur must repair tv convergence board again to fixed this problems called convergence pictures problems.

Aug 22, 2011 | Mitsubishi VS-60609 60" Rear Projection...

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LG Projection TV Model# RT-49NA11T Green color gun shows bent arc on top & bottom.Red & blue guns are ok.How to adjust the green gun to remove the bent arc. This is causing picture shows mix...

This problems ur tv have can't not be fix by adjustment.The tv have a problems known as 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 have dead 2 STK convergence ICS and some or all of it resistors too.These parts on the tv convergence board,must be replaced to repair the tv convergence board to solved the tv convergence picture problems.The shop,will cost u like $300-350 for parts and labors.

Jan 10, 2011 | Panasonic PT-53WX53 53" Rear Projection...

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My TV color has yellow, blue and red shadows n the picture.

Enter Service mode.. Press Menu -0-1-5-7 in quick succession . From there select the convergence option. You should see 3 crosshairs -Red, Blue and Green. Green is fixed but Red and blue can be moved. Align both of them with green and see if the issue resolves. If not Try moving them around and see if the problem is cleared. If not you may have the inevitable convegence IC problem and the IC needs to be replaced. Let me know if that is the case and I will give you the procedure.

Jun 11, 2010 | Mitsubishi WS-55907 55" Rear Projection...

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Yes - about every 4-5 years.

This is a common problem. Its called a convergence failure.

Problem #1) Convergence


  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms

  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...


Feb 18, 2010 | Projection Televisions

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I am having trouble with the blue gun. It would

Be shure the guns are set properly follow below:
  • Pre Heat Run should be finished.
  • Be sure Screen Color Temperature setting is in the COOL mode
  • Room Light should be minimal.

  1. Go to I2C ADJ. Mode. (With power Off, press the INPUT button on front panel and then press the POWER ON button then release. The Service Menu is displayed.)
  2. Set R DRV (COOL) to center data value (3F).
  3. Set G DRV (COOL) to center data value (3F).
  4. Set R, G, and B CUTOFF (COOL) data settings to [80].
  5. Adjust Screen VRs on Focus Pack fully counter clock wise.
  6. Choose SERVICE item [1] of I2C ADJ. Mode. Select CURSOR RIGHT and the Vertical will collapses.
  7. Adjust any Screen VR. Screen VR should be turned clockwise gradually until that particular color is barely visible.
  8. Repeat for the other two colors.
  9. Exit SERVICE MODE by pressing the CURSOR LEFT on remote.
  10. Exit SERVICE MENU by pressing the MENU key on remote.

Oct 12, 2009 | Hitachi 51F500 51" Rear Projection...

2 Answers

Blue gun out of focus

There is a manual focus adjustment above and between the red and green gun, located in the front of the TV behind the panel; It is a small black box about 3X3" . This has all three adjustments .

Apr 21, 2009 | Samsung HCM5525W 55" Rear Projection...

1 Answer

The Guns?

You will need a new CRT ( Blue Gun) they are fairly exspensive unless you can find one used. let me know if you need more assistance.

Jun 08, 2008 | Sony KP-57WS500 57" Rear Projection...

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