Question about Pioneer SD-643HD5 64" Rear Projection Television
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Posted on Jan 02, 2017
SOURCE: picture is green and stays green
check the convergence area for bad solder connection
Posted on Jan 25, 2008
I had a similar problem with my Green CRT. Fixed it by carefully touching up some solder connections.
1) Locate the Green CRT Driver Board mounted on the bottom of the Green CRT.
2) Locate the two large heatsinks on the driver board. Each has a transistor attached to it.
3) Carefully touchup the solder connections on each transistor. I added some additional solder to help reflow the solder onto the pad of the circuit board. It's a bit tricky because the solder has to fill a large gap between the small leads of the transistor and large holes in the circuit board.
Posted on Sep 15, 2008
Problem solved. With the set plugged in(but in stand by mode) I took the back off. There are two LED on the left board that, if on, identify a problem. The D111 LED was on. I traced it to a blown fuse-FU303 which is the center fuse, about the middle of the center circuit board. I tried replacing the fuse 3 times, after each, it would blow. Another chat section on your site suggested using a 5a(up from 4a) fuse; that fixed the problem. The set works great. Your IC fix worked fine, although getting the boards out was quite a chore. Your link to the instructions on how to R/R the IC chips was invaluable, and the set of instructions on the process was very complete and well done. Thanks for all of your help!
Posted on Jan 18, 2009
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