Question about JVC AV-56WP74 56" Rear Projection HDTV-Ready Television

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TV PROBLEMS MY KIDS NOTICED THAT EVERYTHING LOOKED LIKE IT WAS ON 3D OR SOMETHING. LIKE EVERYTHING HAS A SHADOW. DOUBLE PICTURES DOUBLE WORDS.....

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  • platano70 Apr 22, 2008

    thank you. I tried doing the auto and manual convergency reset. the blue lined up perfectly but the red would not move. im guessing something needs to be replaced now...any body know what part this might be?

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If the images are different colors (red,green,blue) then the convergence has diverged. Some TV allow re-convergence through the menu screen, older sets my need to be physically adjusted (aimed) to clear this up. a strong knock to the TV may have cause this.

Posted on Apr 21, 2008

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Your TV most likely has one of two possible problems.

Problem #1 - Failure in the convergence circuits. ( common problem )

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


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  • One or more colors can't be adjusted when using the convergence menu.
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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.

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. Notice how dull the colors are and how white the screen looks. The screen may also look red, orange, dull, etc.

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TV set after fluid change. Notice how bright the colors are now. Everthing looks crisp and sharp again.

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2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

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