Old tubes

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Old tubes

Arran
Phorum Expert

Posts: 4,896
Threads: 54
Joined: Sep 2008
City: Sandwick, BC, CA

06-14-2014, 03:32 AM

Before you attempt any sort of rejuvenation technique on a globe type tube try re-soldering the tube pins, particularly the cathode and heater pins, and the grid cap. Sometimes a tube with a bad solder joint on the grid cap will test as weak, one with a bad solder joint on the cathode will test weak or test with zero emission. On a 27 or a 26 the grid is connected to one of the small pins, the plate is connected to the other.
Regards
Arran

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Old tubes - by fields 100 - 06-13-2014, 06:06 AM

RE: Old tubes - by Eliot Ness - 06-13-2014, 09:04 AM

RE: Old tubes - by fields 100 - 06-13-2014, 09:47 AM

RE: Old tubes - by TA Forbes - 06-13-2014, 01:22 PM

RE: Old tubes - by Randy H. - 06-13-2014, 03:29 PM

RE: Old tubes - by fields 100 - 06-13-2014, 06:18 PM

RE: Old tubes - by Arran - 06-14-2014, 03:32 AM

RE: Old tubes - by Randy H. - 06-16-2014, 05:08 PM

RE: Old tubes - by Phlogiston - 06-16-2014, 07:42 PM

RE: Old tubes - by Phlogiston - 06-16-2014, 08:20 PM

RE: Old tubes - by fields 100 - 06-16-2014, 08:44 PM

RE: Old tubes - by Eliot Ness - 06-17-2014, 07:35 AM

RE: Old tubes - by codefox1 - 06-18-2014, 03:34 PM

RE: Old tubes - by Phlogiston - 06-18-2014, 03:40 PM

RE: Old tubes - by Tom Hamilton - 07-12-2014, 04:22 PM

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