On Fri, 4 Oct 2013, Dave McGuire wrote: On 10/04/2013 02:07 PM, Ian McLaughlin wrote: Please note that a discharged CRT can build up a static charge again just by sitting on a shelf. Always re-discharge the tube when coming back to a tube you've left alone for a while. This is dielectric absorption. It happens with all capacitances, including capacitance in things that are not capacitors, like CRTs. -Dave I'm suddenly reminded of my largely unrelated habit of always touching a door handle with the back of my hand first and never the fingers or the palm. -- Cory Smelosky http://gewt.net Personal stuff http://gimme-sympathy.org Projects