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Old 10th May 2009, 3:03 pm   #9
Sideband
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Join Date: Oct 2003
Location: Croydon, Surrey, UK.
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Default Re: Cossor 494AC. My first proper restoration

Quite common to have blackened valve pins on this range of valves. A good brush with a metal suede brush will have them shining and a drop of switch cleaner will help to prevent further tarnishing. You'll probably need to repeat the operation some time in the future though.



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