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Old 7th Jun 2008, 6:45 pm   #15
BGmidsUK
Retired Dormant Member
 
Join Date: Oct 2007
Location: Leicester, UK.
Posts: 809
Default Re: Another (possibly silly) valve question

I heard about cathode poisoning some time ago, this was in relation to CRTs being affected in this way with sets having an "instant-on" facility (leaving the heaters powered up).



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