Sony 36" TV with impure lower-right corner

William Sommerwerck · 2008-02-08T14:45:02+00:00

Because another poster has problems with bad corner purity in a Sony TV,this might be a good time to bring up my related problem.I have a 36" 400-series flat-CRT WEGA. I had no problems with it until a daywhen a discussion on prompted me to magnetize theaperture grille by turning off a bulk tape eraser near it -- very near it.(The point was to show that you couldn't magnetize the grille so much thatit couldn't be demagnetized. Yeah.)You know the rest. I now have a permanent mostly-blue splotch at thelower-right corner. The integral degausser has no effect, and the same bulkeraser that created the problem will not reverse it. It's a pretty nastyimpurity (though, fortunately, rarely visible on 4:3 material, and outsidethe range when 16:9 material is displayed).I initially thought the bulk eraser had demagnetized one or more of the trimmagnets on the CRT. But that doesn't make much sense, because there's no waya good sample of any CRT would show that much impurity before trim magnetswere applied. Likewise, I doubt that something got irreversibly magnetized.Someone suggested that the aperture grille was damaged at the initialdemagnetizer shut-off. Any opinions about this, and if so, how the problemmight be reversed?Thanks in advance.As a side remark (which is for interest, not discussion), I also have a 32"Toshiba IDTV. When purchased, it had an impurity splotch at the lower-rightcorner that would not go away. I assumed it was shipping damage (thisparticular model was notorious for suffering shipping damage), and lo andbehold, when I moved from my apartment to a condo, the jostling correctedthe problem. No more impurity.

Feb 08, 2008 20 Replies

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William Sommerwerck 18 years ago

You and Captain Adams.

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Sony 36" TV with impure lower-right corner

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