[Tig] Ursa

Steve Roberts - Post Production steve.roberts at bbc.co.uk
Wed Aug 8 08:01:40 BST 2007

 -----Original Message-----
From: tig-bounces at tig.colorist.org [mailto:tig-bounces at tig.colorist.org]
On Behalf Of Dave Sweet

>>Do you power down your CRT over night as well? The general school of
thought is to "turn off" the EHT while leaving the CRT on (low power)

Is it? I was always taught that this would promote poisoning of the
cathode. Indeed, here at the BBC, we specifically modified all of our
MK3's (and the MK2's before them!) so that when the power switch was in
position 1, the power to the heater was removed.


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