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Re: Hitachi ultrascan hd 42 in
The problem you are facing is a common problem in all rear projection TVs. It's called convergence. If you go into your menu there is an adjustment for it. if it doesn't move back into alignment then you have a more serious problem in the convergence circuit which will require replacement of components.
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By poor color quality, do you mean that if you turn the color control all the way down, the black and white picture is more like black and red, green or blue - or do you have a good black and white image? If the B&W image is good, and the TV is an old (8+ years) one, maybe the mirror inside the set needs a good cleaning - especially if there are smokers in the room. If you have a B&W picture that is tinted, then you may have to go into a service menu to adjust it back to a better picture. Hard to guess the problem without more specific description of symptoms.
No,this tv it is fixable and still can be in used for many more years to come.This tv have a problems known as a convergence pictures problems,it is dead.Tv problems have any colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?Yes,than the tv have a dead convergence board to causes this problems.Must have the tv convergence board to be repair like replacing 2 STK convergence ICS and some or all of it resistors too.To fixed the tv convergence board to solved the tv convergence pictures problems.The tvs shops will cost u like $300-350 for parts and labors.
You need the convergence ICs replaced they are soldered in so its very technical , a repair shop will charge between $230 and $400 to replace them. you can try the autofocus or manual adjustments, but probably need the ICs and possibly a few resistors too.
(2)STK392-110 or kit # X480293 comes with 2 ICs and some resistors
Replace Both of your convergence ICs they are big black ICs and ck resistors RK4246,50,54,58,62 i have the values if you need them they are 1.5ohms up to 3.9ohms.ICs will have STK392-110s if this is the number on yours upgrade to 180s
Convergence amp ic bad http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html http://www.hdtvoice.com/voice/showthread.php?t=28929 Or send to ptscorp.com http://www.hdtvoice.com/voice/index.php?s= good luck
please mark the post with a fixya