49-504

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49-504

462ron
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#13

10-04-2024, 08:42 AM

Hi, I would monitor the voltage on the control grid of the 50A6 pin 6. On 2 occasions on different sets I would see the control grid slowly go more positive after awhile and the sound would get weak and slightly distorted even though I had recapped it. Turned out the tube had gas or some issue even though it tested good. Make sure you replaced the C200 coupling cap on your set.

Ron

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Messages In This Thread

49-504 - by philco4me - 09-27-2024, 01:47 PM

RE: 49-504 - by philco4me - 09-27-2024, 01:53 PM

RE: 49-504 - by Radioroslyn - 09-28-2024, 07:46 AM

RE: 49-504 - by philco4me - 09-28-2024, 10:36 AM

RE: 49-504 - by philco4me - 09-28-2024, 11:19 AM

RE: 49-504 - by RodB - 09-28-2024, 12:20 PM

RE: 49-504 - by philco4me - 09-28-2024, 01:05 PM

RE: 49-504 - by philco4me - 09-29-2024, 05:35 PM

RE: 49-504 - by Radioroslyn - 09-29-2024, 07:53 PM

RE: 49-504 - by philco4me - 09-29-2024, 08:13 PM

RE: 49-504 - by philco4me - 10-03-2024, 04:10 PM

RE: 49-504 - by MrFixr55 - 10-03-2024, 11:45 PM

462ron - by 462ron - 10-04-2024, 08:42 AM

RE: 49-504 - by philco4me - 10-04-2024, 09:20 AM

RE: 49-504 - by philco4me - 10-07-2024, 02:43 PM

RE: 49-504 - by RodB - 10-07-2024, 04:12 PM

RE: 49-504 - by Arran - 10-07-2024, 07:40 PM

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