Date: Tue, 15 Mar 2005 20:43:32 -0700 From: Doug McNutt <[EMAIL PROTECTED]> Subject: Re: SE screen warp
At 17:47 -0800 3/15/05, bob gary wrote:I'm wondering about my SE30's screen that has a slightly off-kilter screen shape---not square. I've been told that you can tweak the shape with some controls inside like a TV, but I don't want to even think about getting near that monitor tube with the power on and the case off.
Don't be so afraid. The controls are on the outside face of the power supply board. You should use a plastic or ceramic tool not so much for insulation but to prevent interference caused by the magnetic blade of a steel screwdriver.
<snip>
But then I don't remember a pincushion distortion control in an SE/30 and you may have a bad component rather than a bad adjustment.
That particular adjustment requires moving little magnets on round slides which are on the narrow back (neck) of the CRT, and it pretty much must be turned on for one to do any good. I'm not sure I've ever managed to improve the screen appearance with these adjustments. There are instructions for these adjustments in Larry Pina's "Macintosh Repair and Upgrade Secrets", but by the time you could find a copy, it might be easier to find a Mac, Plus, SE or SE/30 with a screen in adjustment and do a swap.
Jeff Walther
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