Question about Hitachi 50V500 50 in. HD-Ready LCD Television

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Sorry but NO! The bulb provides a back light for the screen and has nothing to do with the color. No green color can be caused by many things, but the most common problem with all of them is either a Green tube gone out or the IC that drives the color is bad. Both of which are major repairs. However, lets make sure - get you a wooden dial (stick) about 3/8" in Dia. and a foot long and while it's playing poke around on the boards. Sometimes bad connections can also cause a color to go out. If you press on a board and the green returns then you probably have a cold solder joint. Then you will want to take that board out and go over all major solder joints with a solder gun and some solder. Also the IC that I talked about will either be on the board that attaches to the rear of the tube or on the board right where the wires of the green tube comes down, there will be one for each tube. It is a small square component and if you know anything about transistors it is in a to-220 case and has 5 leads coming out of it. Check it and see if it is hot, but be careful, when I say hot I mean burn your finger bad before you can turn it loose.If it is hot then that is it, you can try to find one on the internet. Try "" if anyone will have one they will. Also if you know where there is a TV that someone has junked you can rob one off it. The best I remember the R G B all have the same IC. You could try replacing it and again sometimes that will solve the problem. Usually when I fixed one thing on that type TV something else went out. You asked if replacing the back light would help. If the back light is out you may have a bad ballast as well. Again I don't know where to get one but I know they are expensive. The rear projection TV is one of the most complicated piece of electronic equipment I have ever seen in my 33 years of working in Electronics. That's why I went to such length to answer your question when NO is the answer. You may be able to get it back by trying some of the things I mentioned and get it going again. The above mentions procedures are what I would try if it were in my shop. If I can be of further assistance please feel free to contact me.
Col. Dana Gillespie

Posted on Apr 26, 2014

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