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You get a blue rainbow on the screen that can not be adjusted

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Converge chips

Posted on Oct 08, 2008

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Do lamps have adjustment? I have a yellow and blue rainbow effect along bottom of screen. I am pretty handy and well equipped.


This would be a convergence adjustment. Check your user menu on the tv. Look for an item under video settings for a something called "Converge" or "Convergence". See if you can adjust it enough to fix the problem. If not, you may need to access the service menu and adjust from there.

Feb 16, 2011 | Toshiba 42H81 42" Rear Projection...

1 Answer

Blue background with "rainbow" like


Check the info from this link to see it it applies to the rainbow lines from your TV.

Jan 04, 2011 | Sony KP-65WS500 65" Rear Projection...

1 Answer

The screen has a rainbow of red blue and green on bottom


The specs say this is a CRT type projection system, so it could be related to the display or to the TV. Since this has an SD card, it might be good to plug in the memory card with some pictures on it, and see if the problem persists with a source other than the tuner. That might at least narrow down whether you have a display failure/adjustment issue or something else.

Jul 04, 2009 | Panasonic PT-56TWD63 56 in. Rear...

1 Answer

Sometimes I get a rainbow on the bottom of the screen.


Your TV most likely has 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.

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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.

0667c5f.pngSOLUTION

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 www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Jun 18, 2009 | Philips 60PP9202 60" Rear Projection...

1 Answer

Video distortion


You need to take your tv in and have the picture deflector re-aligned.  This doesn't cost much, My dad had to do that to his a few months ago and it cost 30 bucks.

Mar 21, 2009 | Mitsubishi VS-60705 60" Rear Projection...

1 Answer

From the bottom to mid screen I am getting a blue/yellow type rainbow interference


I have a blue rainbow arching up to about mid screen. What is causiong this?

Oct 01, 2008 | Toshiba 53H71 53 in. Rear Projection...

2 Answers

Rainbow on the screen


Do you have any larger speakers close to you tv. Or any magnets been neer it. If you unplug it for a while the tv should have remove the rainbow

Aug 28, 2008 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

Blue rainbow on the bottom of screen


You will need to replace or have the convergence IC's replaced. There are two IC's on the printed circuit boards that need swapping out. you should call in a pro to assist you in the=is repair if you have no solid state repair experience. good Luck

Jun 05, 2007 | Toshiba 43H70 43" Rear Projection...

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