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#10
02-24-2009, 05:18 PM
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Could be some of the cathode material has cooked off over the years. I've seen some rectifiers with powder inside from this. I generally ignore it as long as it works properly. I've got one 80 tube thats been in service for 81 years now. Its got a bit of powder, but the radio still plays.
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Random bits of stuff in the collection: Yamaha YP-D4 turntable with B&O MMC 10E cart Allied 495 receiver 2 Magnavox amps, AMP150 and an AMP178, currently under the knife. Onkyo TX-4500 Onkyo Radian III speakers 
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