Re: [Wlug] Wlug Digest, Vol 70, Issue 17
The issue with 60 Hz and the LCD was not flicker. I mentioned visual defects. I meant things like missing pixels. I had to use the analog connection because that was all that was available on the PC that I had just bought. I just looked at the setting now to see if I had really chosen 120 Hz which is still a harmonic of 60Hz. Unfortunately for looking at the setting, I moved three years ago from the house where the office had fluorescent lights. When I set up my computer again in the new house, I must have somehow gone back to the default 60 Hz. There are no fluorescent lights around and there are none of the visual defects I saw in the other house. When I brought my unit back to Fry's electronics they had no such problem in the store from the ceiling lights which were a good 15 or more feet away. They gave me a replacement anyway just to keep me happy. I had not even suspected fluorescent lights at that point. When I got the replacement home, it had the same problem as the first one. I was about to give up on Samsung in disgust when I asked around at work if anybody could figure out the problem. Our computer hardware support person mentioned the fluorescent light idea. I went home, changed the frequency and the problems disappeared. The fluorescent lights in my home office were probably only 4 feet from the LCD. The cause of the problem might have been something completely different, but I cannot come up with another explanation that fits the observations. Maybe I had sympathetic 60 Hz fluctuations from my neighbor's ham radio. Whatever was the cause, getting away from 60Hz seemed to be the solution. /Steve -- Steven Greenberg Email: steve@ssgreenberg.name 251 Holland Rd. Phone: (774)241-0095 Fiskdale, Massachusetts 01518-1231 Web: http://www.ssgreenberg.name Other Email: s.greenberg@ieee.org ssg@alum.mit.edu
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Steven Greenberg