NeXT MegaPixel 21" Color Display (N4005) only shows distorted image

Started by don_apple, February 20, 2023, 12:39:38 PM

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I have a NeXT MegaPixel 21" Color Display that used to be attached to the NeXTDimension card in My NeXTCube.

I didn't use it for a couple of years, since I've replaced it with a NEC MultiSync LCD (which I also use for other machines in my collection).

I've now decided to get the MegaPixel Display out of storage to see if it still works, but unfortunately it only shows a very distorted image (see the attached screenshot).

Checked the cable on another monitor, and there it works fine, and I also know that the NextDimension is working correctly.

So there must be an issue with the monitor. Has anybody seen this issue before, and is there an easy fix for it?




If the tube itself isn't burned out then it's probably fixable. Like everything capacitors would be a likely culprit.