Question about Pioneer SD-643HD5 64" Rear Projection Television
I bought the tv used on line. it has been working great for about a year. Recently I have been readjusting the grid on the tv. When I turn the tv off and turn it back on after awhile the grid is messed up. So I adjust it again. Its good for the time the tv is on but I turn it off and its messed up again. Is there anything anybody can tell me about the problem. Should I start looking for another set? Please help the wife said I can't get another one till this one is done.
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Posted on Jan 02, 2017
SOURCE: Pioneer SD-532HD5
This fault happens with just about any tube type projection set. The convergence IC's simply need to be replaced. They are two black, 2"X3", stand up ICs that will start with the letters STK on the surface of them and are mounted up against a large metal heatsink. If you have the soldering skills this should not be so hard for you to do, but please if you do not have the skills or experience to replace these IC's call in a pro to assist you with this repair. Good Luck
Posted on Mar 28, 2007
Wow, that first link is perfection! I'm worried though. The photo on that link shows the base grid green pattern looking VERY geometrically even with only the red and blue lines off. On my set, the green base grid geometry is off/wavy. Are the IC's the correct fix?
Posted on Jan 26, 2008
SOURCE: "TV Not Turning On"
i have the same tv, all i did was take out the power supply board and reflowed the solder on there. i have heard that this is a common problem with these televisions, but its not too hard to fix (just takes about 2 hours to resolder them all). hope this helps
Posted on Oct 26, 2008
SOURCE: Pioneer projection tv SD-582HD5
I had the same problem, try running the TV on Mute, if it is a bad solder joint the sound can vibrate the solder point and trip the relay, if the TV doesn't trip off with the sound on mute then it is probably the big power transformer's solder connection needs resoldered. sound vibration from those big pioneer speakers may loosen the solder joint over a period of time because the transformer is heavier and bulky and vibrates a lot.
Posted on Sep 13, 2009
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