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

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I also have the red lines on my JVC aw-56WP74 model TV. I was told if I replaced the red bulb(lens), then I would need to replace all three bulbs together; otherwise, the red would be too powerful for the two older green/blue lens. Thanks for the response.

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No, dont need to replace all 3, adjust g2 to compensate, along with drives and cutoffs

Posted on Jul 11, 2007

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JVC HD 56FN97 No RED color

Does menu have any red? Yes = digital video bad; No is light engine bad.

Mar 31, 2014 | JVC Hd56fn97 56-inch 1080p Hdila Rear...

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Replaced convergence ic's and picture is good but still no blue color to adjust in the convergence mode. the blue bulb is lit in back.

You may have pressed a wrong button when in service mode---it allows among other things to turn individual colors off like Blue--to make it easy to adjust red to green first.

Also take a look with set on into the Blue lens to make sure you have a image and it does not look like a blue flood light.

a last note: if you tampered with the lens (they have a wing nut on side that allows them to be turned you may have on the blue turned the lens so far there is no focus---for that lens--Did you?

May 30, 2012 | Samsung HCN4727W 47" Rear Projection...

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Someone offered me a jvc hdtv av-56wp74,and one person said just the bulb in the lamp has to be replaced;then when called jvc they said i had to by colored tubes for 300.00 each,,,,who do i believe

The tubes rarely fail in this model so it may be a convergence issue instead. 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.

Here is an example video

Feb 14, 2012 | JVC AV-56WP74 56" Rear Projection...

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JVC AV-56WP74 56 in. Rear Projection red projector is not showing images and big red line in tv

If the red line looks like a swoosh of red across the screen it may be the convergence Ic having an issue.

Jul 04, 2011 | JVC AV-56WP74 56" Rear Projection...

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JVC AV-56WP74 Colors quit working or went out of balance.

Guns or CRT are probably ok. Your TV needs a convergence IC STK392-120 replacement. Lamp are used on LCD and DLP rear projection TV's. Color wheel are for DLP's. :)

Dec 26, 2009 | JVC Projection Televisions

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I'art color problems

Try using the convergence manualy and adjust each box. Manualy adjust red inside tv,or new bulb.

Apr 08, 2008 | JVC AV-56WP74 56" Rear Projection...

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JVC AV-56WP74 self check question

Each picture tube (red,green,blue) has a magnifying lens assy that sits on top. On each lens assy is a manual focus adjustment with a wing nut that tightens it. The image bounces onto the mirror and shoots it onto the front screen. If you're not a technician then I don't advise you to do this adjustment. You could touch something in the high voltage by accident.


Feb 11, 2008 | JVC AV-56WP74 56" Rear Projection...

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Convergence problem

I have this exact model TV, and my red bulb was the primary culprit. I almost had it, but then a lot of fluid came from underneath the bulb? I had to turn it off in fear of electricution. Ended up selling the TV.

May 19, 2007 | JVC AV-56WP74 56" Rear Projection...

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