Question about Mitsubishi WS-55511 55" Rear Projection Television
I just bought a Mitsubishi WS-55511 and had picture and sound from my cable connection. After a period of time the picture went blank, but sound remained. Picture and sound still worked on the Hi-Def inputs. After unplugging the TV and playing with settings the picture with sound came on. Then after a while the picture shuts off. Is there any code combination on the remote that will cause the picture to shut off and leave the sound on?
If you have picture in a picture feature and a button that controls that ,maybe you hit the pic.in a pic. button.It would go blank cause the other source for pic. ina pic. does not exist.Thats just a guess.The this behavior happen when you use a dvd or antenna connection?If so there might be something wrong with tv.Try a different input b4 anything else.
Posted on Jan 31, 2008
DO A HARD RESET: Unplug the power cord for 4 hours. This will discharge all the voltages on the internal eproms. When you power it back up the factory defaults will automatically replace the eprom data. This will correct any corrupted codes.
Of course, this may not be the problem, but could be. So this is a first line check.
WHACKING TEST: Many times these sort of mysterious conditions are a result of loose wiring or cold solder joints. About half of the strange complaints I get fall into this category. While the set is on and while you are trying to address the OSD, bang on the cabinet in several places with your hand or fist. This will jar the set hard enough to restore the faulty internal connection that may have been the culprit.
If nothing pops up by now, it is most likely the controller IC and/or screen graphics driver is defective and needs replaced. This is not related to the picture or video that comes from the program, they are really quite separate.
The cost of this repair could be quite high because it will require a tech to do some clever analysis in order to find out exactly which circuit is the offending one.
I don't think you will find this kind of problem written up in any of the manuals or service books. It is quite strange and really, if a tech is needed, well require one who is a cut above the ordnary one: Someone who really knows how to troubleshoot and analyse and think about what is going on inside. Most Mitsubishi techs are "phone jockeys" the merely call an 800 number and someone tells them which board to replace. They replace until the repair is made and they don't really know what is going on inside - but you get a bill for $400 or $500!
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Posted on Jan 31, 2008
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Posted on Jan 02, 2017
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