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#1 2014-11-12 16:02:17

MJ313
Member
Registered: 2014-09-23
Posts: 498

AppleColor High-Resolution RGB Monitor odd issue

So... I picked up this AppleColor High-Resolution RGB Monitor at the dump a few months back. It works! The only issue is a very odd one. (I'll back up a bit now... I've attached this to both my 7600 and 475 and the problem can be re-created so I am pretty sure it's the monitor itself.)

Here we go:

When I click on the Apple menu, the display shifts down a few pixels. Almost like a screen correction. When I let go of the Apple menu, the screen corrects to its original position.

Also, when I open a single window, the display shifts down a bit. It stays down as long as the window is open. I can open other windows/menus and nothing changes.

This isn't the end of the world, and seeing as how this thing is ancient and from the dump, it would indicate some sort of fault somewhere. Has anyone else had this happen?

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#2 2014-11-12 23:06:08

techknight
Member
Registered: 2014-05-22
Posts: 453

Re: AppleColor High-Resolution RGB Monitor odd issue

Any time you do anything to turn on more pixels, it causes the CRT to draw more current from the flyback and power supply. If you open up simpletext and take it full screen, the problem will become more noticeable.

Some shifting is normal,  a large amount is not. Indicates a weak high voltage or power supply. And these days, its caps.

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