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Old 03-17-2023, 04:38 PM
Chris K Chris K is offline
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Join Date: Jun 2022
Posts: 1,505
Quote:
Originally Posted by bandersen View Post
3 & 4 are the tube filaments. I wouldn't worray about them since your tubes are lighting up. I suggest checking the 12CA5 audio output tube and the 12DQ6 horizontal output tube.
Happy Friday all and Happy Friday Bob!

I'll keep this simple. I'll state the tube and the readings will go from Pin 1 to the last pin sequentially. I won't give the pin number for clarity sake. I'll list the resistance readings as measured/should be. All were measured from chassis ground except where indicated otherwise.

12CA5: 96/68 0/480K 0/12 0/14 530K/480K 1100/1000 295/295

12DQ6: 0/0 12meg/22 0/0 192k/9k 1meg/1meg 500k/Tie Point 20/20 3/0 15/25 (Top Cap)

To me, the 260v C voltage isn't getting to the 12CA5...but I'm kinda lost! Any thoughts? I'll remeasure to be sure.
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