I have this old CRT monitor that has a dead pixel. At first it was no concern because, hey, its old. But then I noticed that it wasn't always in the same spot, which perplexed me. It moves along the vertical axis, but never on the horizontal axis. Does anyone know what might cause this? I'm leaning toward the pin cushion, but I don't know for sure.
thepastimer
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Jump to PostA moving "dead pixel" must be due to the video circuitry and not the CRT. You might care to tell us which video card you have. It contains a frame buffer and if this is not populated correctly, neither will your CRT screen.
Jump to Post> It moves along the vertical axis, but never on the horizontal axis
By itself, or when you scroll a page or a window or ...
Jump to PostAh - that's a whole different picture (forgive the pun!).
What follows is logical deduction rather than a definite answer. If the dead spot is definitely in a different position then it could be dirt on the shadow mask that lets the electrons hit the phosphor dots.
That …
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