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Scrolling lines I have a 65" mitsubishi tv, WS-65807. i bought this tv new in 2000, i had to have the convergence ic's resoldered about 6 months ago, now i have a new problem. the picture has scrolling horizontal lines when i use the hi def component input, the problem goes away when i disconnect the cable tv jack. Any ideas as to what is wrong. I also had the tv calibrated by an ISF tech in 2001. Awesome picture when it is not messing up.
Try using a DVD though the component input (need a 480P out ). If the pix si ok I wouldsuspect the cable box. If the problem is still there I would suspect a video switching IC or a Leaky regulator.
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The tv have a problems known as a convergence problems,it dead.Tv have colors lines R,G,B mis alignment,have colors shadows pictures or 3D pictures look alike.The tv convergence board 2 STK convergence ICS and some or all it resistors are dead.These parts on the tv convergence board,must be replaced to solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.
Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem. You can get a repair kit with parts and instructions from www.TvRepairKits.com
Jim,
yes the convergence Ics are what cause the two picos to be open they are both 5 amp picos. You can get the picos, the convergence ICs and the factory service manual for your model at the following link.your model is known as the V17 chassis for service manuals and you should require two STK392-570 Convergence ICs. Heres the link they provide free instalation instructions. http://servicemanuals.vstore.ca/
I replaced the pico fuses and the convergence IC's. fuses poped right away code 22 . Further inspection of the board showed the coolant had leaked out of the center projector and fried the board. Not willing to pay $300. Passed it on to someone else
convergence ic going. you may also want to check some caps; http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
caps http://www.chrisandnat.com/Projects/BlinkingTV/blink.htm http://www.jeremyburns.com/Mitsubishi-Green-Blinking-Light-Fix.pdf http://www.fixya.com/howto/h159332-mitsubishi_dm_board_repair http://hdtvoice.com/voice/showthread.php?t=32186 replace DM
first bad link !!!
tell me if you get these lines away when you do little hits on the side of the tv ,
if so that mean you have bad soldering pin and need resoldering
regards
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thx
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