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Old 1st Mar 2015, 6:31 pm   #116
Freya
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Join Date: Jan 2009
Location: Falmouth, Cornwall, UK.
Posts: 1,987
Default Re: Marconiphone VRC74DA

I had wondered if the HT was dropping, something looks odd with the contrast. Do you have the ability to test the tube ? would be worth finding out just how low it actually is.
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