Question about JVC HD-52G886 52" Rear Projection HDTV

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JVC HD-52Z575 TV that has briteness an color purity problems.

I have a JVC HD-52Z575 TV purchased in 2004 that recently had the lamp loudly "pop" and go out. I replaced the lamp from one purchased at DM and when I turned it on, the pictures were much darker requiring the briteness and contrast adjustments to be max'ed out. Also, there is a decidedly darker large area dead center on the screen and within this circle the colors are off in hue. The color purity is wrong. On a full red screen, that same circled area has a purplish tint to it. Faces outside the circle are proper hue where they are purplish inside the circle. The hue adjustment dos not function at all even with color management turned on or off. Turn the color all the way off and the black and white picture is fine except for the darker area.

I though it might be the lamp and tried another new lamp from DM with the same results. I had a JVC "preferred" repaiman come out to look at the set and they said it has to go into the shop. They said if it isn't the light engine, the cost to repair should be between $500-$700! That would include a board that could be at fault on the light engine. They mentioned that they have to hook up a PC to the TV to analize it and possible "update" the eeprom. When I asked why they could try doing the eeprom in the home and what the cost would be, they could not answer except that the computer doesn't go out to the field.

I think they're trying to take me to the cleaners! I've been a TV broadcast systems engineer for over 40 years working for television stations as well as RCA field service enineering and NBC at 30 Rock in NY. I know how TVs work. But it seems to be a dark deep secret about the inner workings of this TV with little or no information available. From what I see in the forums, either I need a rewrite (reset) to the EEProm or a module or a light engine. I can do the work myself. Does anyone else out there have some thoughts on how to get this expensive TV back to working correctly without spending a bundle?
Don

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  • dcsharpsr Oct 02, 2009

    Thanks for the responce to my question/plea regarding the HD52Z575 problems and you mentioned at the end about downloading the software to reprogram the EEProm. What site can I go to to get the software? I looked at JVC Downloads and did not see it there. And is there a procedure to updating the EEProm?

    Thanks for the other information. I went to Encompass and found my model with the parts list. Great! Only thing left would be to get the service diagrams of the set. We older engineers used to go to the parts store and look at the SAMS books. I don't think there in business anymore.

    Don Sharp Sr.
    dcsharpsr@gmail.com

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  • JVC Master
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From what little I have read about these TVs parts are High Call JVC 1-800-233-1060 Ask for TECH surrport them them what your problem is If it doe turn out to be Light engine Call UED for price of rebuilt one 1-800-648-6657 Also go to website ENCOMPASS look up your Model number they will have a listing of Parts 1-800-638-3328 You can try Downloading to USB stick in formation to it reprogram eeprom to TV sometime this will correct problem! GOOD LUCK with the repair.JVC downloads.

Posted on Oct 01, 2009

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