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In Reply to: Bad H-K insulation is another scam posted by andy evans on August 12, 2010 at 02:01:23:
Crank up the filament volts to 10V for a few minutes without any HT , leave to cool and retest . Usually sorts 807's out but not all of them .
Al
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Follow Ups
- RE: Bad H-K insulation is another scam - Al Noakes 08/12/1003:11:51 08/12/10 (0)