Question about Pioneer SD-643HD5 64" Rear Projection Television
Green grid is off in every mode, the least of which is Natural Wide. I can get the red and blue to adjust to most of the wacked green grid in that mode. But these are wavy green lines I'm adjusting to. I've ordered a couple IC's for the unit and will attempt a DIY. I'm hoping that the green grid will snap back into place with the fix. If it doesn't, what do I do next. If it requires getting a manual, where do I go?
Yes, replacing those chips should fix those "sudden" convergence misalignment's for any color. Each chip contains 3 amps, one for each CRT Red/Green/Blue. One chip is the horizontal amp, the other is the vertical amp.
My 643HD5 was equipped with the -120 chip, but I replaced them with the newer uprated -180 part. (per Pioneers website)
When replacing yours, be sure to remove all the old heat sink compound. Then apply a thin layer of heat sink compound onto the back of the new chips. More is not better. Secure the chips onto the heat sink before soldering them in place.
Posted on Sep 24, 2008
I was looking at the "multiconvergence" photo on the first link above and note that the green grid looks perfect while only the red and blue look wavy. On my set the green is the wavy one. Is this an IC problem with the green or is there a seperate more likely cause? I'd hate to do all the work for nothing. Thanks.
Posted on Jan 29, 2008
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
Posted on Jan 25, 2008
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Posted on Jan 02, 2017
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