40-180 tube changes

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40-180 tube changes

Patrick
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Posts: 365
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Joined: Oct 2014
City: Winter Haven, FL

#15

06-07-2015, 10:40 AM

(06-07-2015, 10:11 AM)Radioroslyn Wrote: After taking a second look I think I would unground that resistor. Circuit wise it doesn't make a lot of sense cause it will pull the plate voltage on the osc section of the mixer way down. Tube manual sez the triode section can take up to 250vdc which less than the chassis is providing. Is your 4.7K resistor in spec?

Terry

Yes. I'm going to keep this radio, So I've replaced all of the resistors, and checked the new ones as I install them. I'll go eliminate the possibility of a shorted socket first, then go from there with your second suggestion. But only after another cup of coffee. It's almost 8 A.M. here.

Tanks,

Pat

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Messages In This Thread

40-180 tube changes - by Patrick - 05-30-2015, 05:53 PM

RE: 40-180 tube changes - by Radioroslyn - 05-30-2015, 07:48 PM

RE: 40-180 tube changes - by Patrick - 05-30-2015, 08:29 PM

RE: 40-180 tube changes - by Patrick - 05-31-2015, 07:43 AM

RE: 40-180 tube changes - by mikethedruid - 05-30-2015, 07:50 PM

RE: 40-180 tube changes - by Patrick - 05-30-2015, 08:31 PM

RE: 40-180 tube changes - by Radioroslyn - 05-31-2015, 07:32 AM

RE: 40-180 tube changes - by Patrick - 05-31-2015, 07:51 AM

RE: 40-180 tube changes - by Radioroslyn - 05-31-2015, 08:46 AM

RE: 40-180 tube changes - by Raleigh - 05-31-2015, 04:13 PM

RE: 40-180 tube changes - by Patrick - 06-06-2015, 06:05 PM

RE: 40-180 tube changes - by Radioroslyn - 06-07-2015, 08:47 AM

RE: 40-180 tube changes - by Patrick - 06-07-2015, 09:39 AM

RE: 40-180 tube changes - by Radioroslyn - 06-07-2015, 10:11 AM

RE: 40-180 tube changes - by Patrick - 06-07-2015, 10:40 AM

RE: 40-180 tube changes - by Patrick - 06-07-2015, 01:32 PM

RE: 40-180 tube changes - by codefox1 - 06-07-2015, 11:03 AM

RE: 40-180 tube changes - by Patrick - 06-07-2015, 11:48 AM

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