Question about Hitachi 61SWX10B 61" Rear Projection Television
It's a 42" Hitachi Plasma using an AVC 75 receiver manufactured in 05. When cool, the picture is perfect. After about 90 minutes or so the unit heats up enough to start changing / flashing colors (red tint, green tint, Blue tint, B&W. This continues for about 30 minutes and then numbers appear, over the picture, that go from the top to the bottom on the left side of the screen. It almost looks like a count down timer. It'll also start changing the picture display (zoom in) narrow screen, completely black, etc. I pulled apart the TV and cleaned all the boards (it was pretty nasty), checked for cracked solder joints, obvious diode or capacitor failure, and everything looked great.
If I isolate the receiver unit, and put a fan on it, it runs perfectly for 12+ hours. Once it gets going nuts on me, I can turn on a fan and it'll take about 30 minutes to get it cooled down enough for a normal picture. After getting it all dusted out (the internal fan was pretty nasty but working), the performance got better but still has issues. Everything inside it is pretty clean now, no obvious component failures, heat syncs seem to be intact, fan is working, and when cool, it works great. Any ideas?
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Posted on Jan 02, 2017
SOURCE: hitachi 43fdx20b
Common repair of convergence circuit..............involves taking
chassis or circuit board out and replacing two convergence
IC's.....Hitachi upgrade part # CZ 01341 ........T.
Posted on Dec 17, 2007
SOURCE: all color guns out of alignment
Needs convergence amps replaced. Sometimes resistors burn and need to be replaced. This repair requires soldering/desoldering equip. and a trained eye, but usually can be done for 175.00-325.00 at a reputable service center. Good luck, Russmann.
Posted on Nov 05, 2008
It sounds like bad solder connections in the convergence output circuit. It may also be an intermittant convergence output ic which will need to be replaced.
Posted on Jan 04, 2009
Ur convergence is dead.U know how to solder.
Tries this website.Tv Repair World.com.Buy ur convergence kit and replace it.
Posted on Sep 06, 2009
Testimonial: "Worked like a charm! sorry for the major delay in feedback. Have been a little busy... lol! Thanks again."
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