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Linear Mode
No RF on 89
RodB
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Posts: 990
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City: Roseville, MN
#2

12-18-2020, 12:10 PM
It looks like the oscillator isn't running. The tickler has to be connected in the cathode circuit so as to provide a positive feedback. If it's connected backwards, no oscillations. Also, be sure the oscillator cathode bypass cap you put in is OK and soldered well. Cold solder joints can shut down the oscillator. And the oscillator tube may not be able to do the job despite the tester results. Probably the most confounding problem especially in these earlier sets.
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Messages In This Thread
No RF on 89 - by Patrick - 12-18-2020, 11:44 AM
RE: No RF on 89 - by RodB - 12-18-2020, 12:10 PM
RE: No RF on 89 - by Patrick - 12-18-2020, 12:52 PM
RE: No RF on 89 - by RodB - 12-18-2020, 01:07 PM
RE: No RF on 89 - by Patrick - 12-18-2020, 01:28 PM
RE: No RF on 89 - by Patrick - 12-18-2020, 01:42 PM
RE: No RF on 89 - by Radioroslyn - 12-18-2020, 06:39 PM
RE: No RF on 89 - by RodB - 12-18-2020, 07:13 PM
RE: No RF on 89 - by Patrick - 12-18-2020, 10:48 PM
RE: No RF on 89 - by Patrick - 12-20-2020, 10:15 AM
RE: No RF on 89 - by Patrick - 12-20-2020, 10:22 AM
RE: No RF on 89 - by Patrick - 12-20-2020, 10:50 AM
RE: No RF on 89 - by Steve Davis - 12-20-2020, 10:52 AM
RE: No RF on 89 - by Patrick - 12-20-2020, 11:54 AM
RE: No RF on 89 - by Patrick - 12-20-2020, 12:08 PM
RE: No RF on 89 - by RodB - 12-20-2020, 01:04 PM
RE: No RF on 89 - by 462ron - 12-21-2020, 08:16 AM
RE: No RF on 89 - by Patrick - 12-21-2020, 08:45 AM
RE: No RF on 89 - by Patrick - 12-21-2020, 10:07 AM



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