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Tv, has yellow hue,lacks brite,day and night selector not working 42v710.v5a005456. projection tv. changed lamp 2.5 -3 years ago. tried to fix color,no change.
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The TV is a plasma screen. There are several circuit boards that will go bad over time that affects the picture quality. TV Parts Universal TV Stands DLP Chips ShopJimmy You can get the parts here and replace those boards yourself.
Sounds like you have a convergence problem. If you go into the setup menu of your TV, there should be some settings to adjust the red, green and blue hues and re-position them so each color matches up. If this does not work or if you don't have a menu, your TV *might* have a circuit board with several plastic screws on it. These adjust the picture and it's a very tedious task to re-align each hue correctly.
My projection TV is an older model from 1995, which is probably why it has this circuit board in place of a convergence menu built into the TV.
If adjusting the convergence still doesn't work, you might need to purchase a new convergence chip.
The lamp life span is over,need a new projection lamp replacement.This tv lamp has not been replaced at least 1 1/2 or 2 years?The tv lamp in the tv now,tv on an used at least 4 or 5 hours a day too.
I believe you have a optical Engine causing the problem. Due to the cost, I would call Hitachi to see if they could help with repairs.
Hope this helps,
Skyassoc
spherical or oval shaped light starting in the center of your picture is an indication of an led backlit tv.. probably a hitachi. solution, replace light engine..ps no garuntees not with led backlit sets.. was bad idea to begin with. when the leds start going they start at the center and branch out.
it is actually a light engine problem, i have replaced probabily 50 of thease for that exact problem, it is a prity hard part to change yourself, and it costs about 400 dollars
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