>...Seen many a monitor do this. There is a component in the (very) HV
>focus section of the CRT that is going out of spec when it warms. IF you
>are adventurous and Very, VERY careful, you can adjust the focus
>(usually accessible with the back cover off) and gain some usability. In
>my experience tho, the focus will shift again a month later...
>
>***BE ADVISED, HV in CRTs can (and WILL) KILL--and just unplugging does
>not remove the danger--there are some very large capacitors in there
>that will hold a charge for a very long time. ***
>EricB

Voltage is harmless. AMPERAGE (current flow) is what kills.

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