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- Path: sparky!uunet!stanford.edu!agate!jdb
- From: jdb@ocf.berkeley.edu (Justin D. Bukowski)
- Newsgroups: comp.sys.mac.hardware
- Subject: GoldStar monitor contrast inverts screen
- Date: 25 Aug 1992 17:37:51 GMT
- Organization: U.C. Berkeley Open Computing Facility
- Lines: 31
- Distribution: na
- Message-ID: <17dr5fINNqjk@agate.berkeley.edu>
- NNTP-Posting-Host: avalanche.berkeley.edu
-
- We bought a Mac LC a few months ago (*right* before the LCII
- was announced) and bought a GoldStar 14" VGA monitor to go along
- with it. The back of the monitor calls it a model GT3031, but the
- shipping list says model 1450 from MacDirect. The Mac and
- monitor have been on continuously, with a few shutdowns, since
- February.
-
- We are starting to see problems with the monitor. There are slides
- on the front to control brightness and contrast. When the contrast
- is set more than halfway towards the high end the screen inverts color.
- The color inversion is not exact: some blues turn to yellow and some
- don't; likewise the black/white inversion is not exact: a vertical
- black line develops a white ghost to the left, a horizontal black line
- has no ghost, while the white background turns black, obscuring both
- original lines.
-
- I don't know enough about these monitors to know what the problem is.
- It seems that one of the electron beams (I assume it has three for the
- color) is not aligned with the others when the contrast is changed.
- I recall that the Apple 13" has a button on the back to degauss. Of
- course, I don't know exactly what degaussing does in a monitor.
-
- It's still under warranty but before I send it out I'd like to
- try to find out what the problem is. Anyone have any ideas?
-
- Justin
- --
- Justin D. Bukowski | |
- University of California | I feel like an alien, |
- Berkeley, CA 94720 | a stranger in an alien place. |
- Fantasyland | - Phil |
-