Model 90 Output Transformer

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Model 90 Output Transformer

rrova
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Posts: 26
Threads: 4
Joined: Feb 2016
City: Nelson State, Province, Country: BC

#13

03-04-2016, 09:53 PM

Yes, the two inner pins are at the bottom (they are labeled with T's & B's in the diagram for Top & Bottom). I agree that chassis and transformer are not wired correctly. I was unaware of the speaker pin wiring convention that you clarified for me, and I appreciate that. Thank you!

I made this rat's nest diagram to help me in identifying the connections as I trace through the circuits (and to make sure I know which tube pin is which). I'm using a signal generator, a 'scope and a signal tracer along with voltage measurements to identify problem areas. With the diagram and the original schematic I can usually keep track of where I am in the circuit analysis. Also, making the diagram helped me to find incorrect values for some components, missing components, and miswired connections.

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Messages In This Thread

Model 90 Output Transformer - by rrova - 03-02-2016, 03:52 AM

RE: Model 90 Output Transformer - by klondike98 - 03-02-2016, 08:07 AM

RE: Model 90 Output Transformer - by morzh - 03-02-2016, 09:29 AM

RE: Model 90 Output Transformer - by Radioroslyn - 03-03-2016, 02:19 AM

RE: Model 90 Output Transformer - by rrova - 03-03-2016, 04:53 AM

RE: Model 90 Output Transformer - by Arran - 03-03-2016, 05:20 AM

RE: Model 90 Output Transformer - by rrova - 03-04-2016, 06:05 AM

RE: Model 90 Output Transformer - by morzh - 03-04-2016, 10:34 AM

RE: Model 90 Output Transformer - by rrova - 03-04-2016, 05:43 PM

RE: Model 90 Output Transformer - by morzh - 03-04-2016, 07:32 PM

RE: Model 90 Output Transformer - by rrova - 03-04-2016, 08:37 PM

RE: Model 90 Output Transformer - by morzh - 03-04-2016, 09:24 PM

RE: Model 90 Output Transformer - by rrova - 03-04-2016, 09:53 PM

RE: Model 90 Output Transformer - by morzh - 03-04-2016, 09:58 PM

RE: Model 90 Output Transformer - by rrova - 03-04-2016, 10:07 PM

RE: Model 90 Output Transformer - by Tubesforme - 03-08-2016, 03:41 PM

RE: Model 90 Output Transformer - by rrova - 03-05-2016, 04:01 AM

RE: Model 90 Output Transformer - by Radioroslyn - 03-05-2016, 08:06 PM

RE: Model 90 Output Transformer - by rrova - 03-05-2016, 08:53 PM

RE: Model 90 Output Transformer - by morzh - 03-05-2016, 08:53 PM

RE: Model 90 Output Transformer - by Radioroslyn - 03-05-2016, 10:35 PM

RE: Model 90 Output Transformer - by morzh - 03-05-2016, 11:15 PM

RE: Model 90 Output Transformer - by rrova - 03-07-2016, 02:47 AM

RE: Model 90 Output Transformer - by morzh - 03-08-2016, 03:51 PM

RE: Model 90 Output Transformer - by rrova - 03-08-2016, 06:17 PM

RE: Model 90 Output Transformer - by Tubesforme - 03-09-2016, 10:59 PM

RE: Model 90 Output Transformer - by rrova - 03-09-2016, 11:04 PM

RE: Model 90 Output Transformer - by Tubesforme - 03-12-2016, 05:47 PM

RE: Model 90 Output Transformer - by Tubesforme - 03-10-2016, 08:35 PM

RE: Model 90 Output Transformer - by morzh - 03-08-2016, 06:50 PM

RE: Model 90 Output Transformer - by rrova - 03-09-2016, 05:33 PM

RE: Model 90 Output Transformer - by morzh - 03-09-2016, 05:39 PM

RE: Model 90 Output Transformer - by morzh - 03-10-2016, 11:33 AM

RE: Model 90 Output Transformer - by morzh - 03-10-2016, 09:19 PM

RE: Model 90 Output Transformer - by rrova - 03-11-2016, 01:06 AM

RE: Model 90 Output Transformer - by morzh - 03-11-2016, 10:36 AM

RE: Model 90 Output Transformer - by Arran - 03-13-2016, 05:31 AM

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