JVC HD-56G787 Support Question
JVC HD-56G787 Support Question
Find answers below for this question about JVC HD-56G787 - 56" Rear Projection TV.Need a JVC HD-56G787 manual? We have 3 online manuals for this item!
Question posted by Dannyh on September 25th, 2011
I Am Seeking The Service Manual ( Not The User Manual) For A Jvc Hd 56g787 Tv.
Requests for more information
Thanks Dan, I have tried the pause picture with a white screen on a DVD as you suggested and do not notice any color issues. Seems as if the color on the tv is fine.
Hate to send this thing to the graveyard. I really need to find out how to access the optical engine area. When I disasembled the front and top part of the TV I could look down into a small cavity in the bottom part (where the optical engine is located) and could see gobs of dirt and debris.
Does anyone know how to access and open the light engine area for cleaning. I have seen on post indicating that JVC makes it fairly simple by taking the bottom rear panels off and the light engine area slides right out???? I realize this is a very delicate area to be messing with, but I feel confident that if I can get into this area, a cleaning will improve the brightness and remove the dark shadow spot I have which is in the upper center part of the picture.
I have researched this issue with the JVC TV and have found it to be a fairly common problem with these televisions.
Can anyone give me a fairly good step by step idea of how to get into the optical light or light engine area for cleaning?
I have now removed the back cover and have slid the entire lower assembly and guts of this tv out. I found the outer areas to be dirty . I have used compressed air and a vacuum cleaner to clean most of the outer area. Now I am facing how to access the inner areas for cleaning.
I guess my question is....once the guts of the television have been pulled out of the rear....how do you access the internal areas around the light engine or optical engine.
Current Answers
Answer #1: Posted by TVDan on September 25th, 2011 4:40 PM
Member since:
August 8th, 2011 Points: 4,732,000
To prove the engine is the problem, put a white picture on the screen (pause a DVD when such a picture occur) and look for discolorations. you will see areas on the picture where it's yellowish or other colors. The lamp puts out so much heat into the engine that a white powdery film accumulates on the optical components, reducing the amount of light that passes. I had such a TV that the customer decided to not fix. I tore into it and tried to make it better. I spent hours and when I was done it was maybe 10 better, but the areas I need to get to, were not accessible. I gave it to a neighborhood kid to play video games on.
TV Dan
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