Question about Projection Televisions
I have a Phillips Magnavox 54" projection tv that is about 9 years old .I have noticed over the last couple of years the picture is getting darker and darker.I have adjusted the brightness to it's highest setting and it's still dark.I took the back off of it to look inside and you would not believe the dust buildup inside.I noticed 3 big lamps or the guns in the front and they are super dirty. Could this be my problem with the dark picture? And my other question is I know a tv has stored energy inside of it so could I safely blow out some of the dust and use windex to clean the 3 guns or lites.I'm trying to avoid a service call if I can.The tv is getting old and don't really want to start putting money into it.
Thanks for any info you can provide me.
Darrt, it`s a big, messy, dirty job but of course anyone can do it if they decide to do so, you MUST get the service manual but it won`t be all that much help, the tubes have to be removed from the set, it`s usually the blue & green that get contaminated, the service manual will explain the procedure to get the fluid out, (which screws not to remove etc.) it won`t tell you to mark the position of each lateral magnet, it won`t tell you that if you move/break the paint on the lateral magnets that your screwed, that yoke position is critical, etc. because they presume your a tv tech. Be advised that you should NOT use Philips coolant when you get ready to refill your tubes, use RCA or some other brand so it won`t repeat the problem, good luck you`ll need it, if you decide to tackle it ask lots of questions on here, BMW Rider
Posted on Dec 11, 2007
Yes, they dim as they age, and you've done well to get 3 years out of one.
Projection TV makers charge an arm and a leg for their replacement lamps. They make it easy to do but as a result the custom lamp assy is expensive. The trick is to just buy the bulb for your model TV from any number of us aftermarket sources at a fraction of the lamp price and install it in the old lamp yourself. really easy.
Posted on Jan 02, 2008
One thing that comes to mind when you say high pitched sound is the HOT ( Horizontal Output Transistor). You may be able to find one at fry's electronics. They are pretty cheap. If you are handy and know something about electronics you may be able to replace it. I am not a TV tech, I have a background in electronics and like to play with them from time to time. Not sure this will help but good luck
Posted on Aug 01, 2008
SOURCE: I have a sony KDS-R60XBR1.
Use a eyeglass cloth or LCD screen cloth. Use NO solvants on it. Just dry cloth. ALSO goto the settings menu and put the tv in HIGH altitude mode. There tv's get too hot and the light engines go out. Green or blue tint. or dots. It also helps the lamp last longer.
Posted on Jun 02, 2011
Testimonial: "Thanks Todd. I appreciate that more than you know. I've had this tv since 2006 and this is my 5th lamp. The last one was the best, 13 months. "
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