Quote:
Originally Posted by freakaftr8
Hey guys, I was watching tv yeasterday and today. I have been laid up from a nasty black widow spider bite to the finger. Im on all sorts of drugs now for the swelling... Well I noticed while watching the set the last few days, when a scene comes on with alot of white or bright contrasting colors, the whites go lime green, when the scene changes, the color neutralizes again to pure white. I have tried everything in the service menus so far to no avail. The drives to the raster (black background seems to stay pure grey when this happens, so it leads me to believe the CRT is ok. If this were a vintage set, normally I would check resistors in the demod circuits.
And no... The vicodin is not affecting my vision, my wife conformed the whites going lime green as well.
Any ideas?
Thanks
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I hate to be pessimistic, but that sounds like a CRT weakening problem.
I don't know the book procedure on that set, but it might be a good idea to do a complete G2 + white balance setup from scratch. It may tell you to scope the DC voltage peak to peak to set the cutoff, although that may not be necessary (never done one). Mitsubishi projection sets from the 80s and 90s were very finicky about that, and if you didn't do it, you could see overdriven CRTs ruined in a few months.
Although it's possible that it's some kind of weird drive problem, I'd try not to put too many eggs in that basket. Try turning the contrast way down during the scenes that cause that, and see if it doesn't happen. If not, then it's 99% the tube at fault (in my personal experience). The good news is, CL is flooded with 40" Sony tube sets; in the $100-$200 range. I'd get a spare!
Charles