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Old 1st Jan 2014, 12:17 pm   #8
boxdoctor's Avatar
Join Date: Sep 2010
Location: Ripley, Derbyshire, UK.
Posts: 773
Default Re: Rejuvenating Magic eye Valves?

I wonder if the loss of brightness is always entirely due to loss of emission by the cathode.
It could be that the phosphor coating on the target might be deteriorating. Targets often look discoloured in the illuminated area. In that case, it would be very difficult to ever achieve the original brightness.
The job "couldn't be done".
He didn't know that,
So he did it.
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