Posts: 365
Threads: 76
Joined: Oct 2014
City: Winter Haven, FL
My 45L label says models 29 and 45. The schematics seem to be identical, but I'm sure there are probably some differences.
The question I have is the connection in the red circle below the 70K resistor. The 29 schematic shows this as connected. Is it?
[Image:
https://i.imgur.com/i8NttCA.jpg]
Posts: 45
Threads: 11
Joined: Dec 2019
City: Oconomowoc
State, Province, Country: Wi
Hi,
Would have to be connected to get b+ to the tube.
Forrest
Posts: 1,088
Threads: 44
Joined: Feb 2015
City: Roseville, MN
I agree, the first audio plate and filter cap 63 get B+ from that connection. Another Riders gotcha.
Rod
Posts: 1,238
Threads: 30
Joined: Jan 2014
City: Wellborn Florida
Some info from beitmans the big difference is the power transformer one rated 120 volts 25Hz the other 120 volts 60Hz. Back when these set were built parts of the USA had power at difference Hz. The lower the Hz the bigger the power transformer.
(This post was last modified: 06-14-2020, 05:02 PM by
David.)
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