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Originally Posted by Al Skierkiewicz
James, Could you explain this in a little more detail? Exactly where did you apply the magnet and what type of monitor are you using? Are the black lines vertical or horizontal? Don't worry about additional xray, the radiation is produced when the electron beam strikes the faceplate due to the high voltage. (30-45 KV)
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Some monitors(especially those made by Sony) and a very few tvs use an array of VERY thin wires rather than a plate thing for the shadow mask. If you can see 2-4 VERY VERY thin horizontal lines acroos your screen then your screen uses wires. (the horizontal lines are support wires). Anyway, I put the magnet right up to the screen and bent/tangled/stretched the wires. There are now lots of little thin vertical line across the screen. The reason i mentioned X-rays is that since there are now gaps in the grid, it seems like electrons hittign the side of the gaps in the grid would emit X-rays at anglis in front of the screen. (i know its probably harmless amounts)