I have actually repaired open transformers by applying a relatively high Dc voltage between the terminals that are open. This "finds" the open and in some cases rewelds the break. I will get back to you after I check on the amount of voltage i applied.
Lou
:The Freshman Master Piece that I am restoring has an open winding in one of the audio transformers. Does anyone know of a replacement or where I can find a used audio transformer? I noticed that Radio Daze has a replacement audio transformer for a Radiola III that seems to have similar winding specs. My radios circuit is different from the schematic listed on Nostalgia Air. It does not have the c battery terminals listed on the schematic. Thanks for your help. Ben
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Lou
:The Freshman Master Piece that I am restoring has an open winding in one of the audio transformers. Does anyone know of a replacement or where I can find a used audio transformer? I noticed that Radio Daze has a replacement audio transformer for a Radiola III that seems to have similar winding specs. My radios circuit is different from the schematic listed on Nostalgia Air. It does not have the c battery terminals listed on the schematic. Thanks for your help. Ben
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Thanks for the suggestion Lou. I will give it a try. I have a ARBE III battery eliminator that has a 90 volt DC post that I can use. Ben
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:Lou
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::The Freshman Master Piece that I am restoring has an open winding in one of the audio transformers. Does anyone know of a replacement or where I can find a used audio transformer? I noticed that Radio Daze has a replacement audio transformer for a Radiola III that seems to have similar winding specs. My radios circuit is different from the schematic listed on Nostalgia Air. It does not have the c battery terminals listed on the schematic. Thanks for your help. Ben
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:Lou
I tried the DC voltage with no luck so far. I use a 40 mfd cap and charged it with the 135v DC terminal and discharged it through the open winding. I started with the 90 v terminal and worked up to the 135v terminal. Thanks for the suggestion and let me know if you think the replacement Radiola III audio transformer will work. Ben
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::The Freshman Master Piece that I am restoring has an open winding in one of the audio transformers. Does anyone know of a replacement or where I can find a used audio transformer? I noticed that Radio Daze has a replacement audio transformer for a Radiola III that seems to have similar winding specs. My radios circuit is different from the schematic listed on Nostalgia Air. It does not have the c battery terminals listed on the schematic. Thanks for your help. Ben
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Ben,
I think what you need is an interstage transformer, there should be two in the radio, replace them both.
I have restored a 1924 Freshman Masterpiece and did replace both interstage transformers.
Go the the ARBE III web site and you will find the interstage transformers you need for $17.50 each.
I will try to post the schematic that only uses the A and B battery.
Unless you get lucky and Sir Edd will post the final schematic that he designed for me.
Mitch
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Check your email for additional information.
Mitch
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:Check your email for additional information.
:Mitch
:Many thanks for the info Mitch. I thought that both transformers should be changed and thanks for your help
Ben
:::The Freshman Master Piece that I am restoring has an open winding in one of the audio transformers. Does anyone know of a replacement or where I can find a used audio transformer? I noticed that Radio Daze has a replacement audio transformer for a Radiola III that seems to have similar winding specs. My radios circuit is different from the schematic listed on Nostalgia Air. It does not have the c battery terminals listed on the schematic. Thanks for your help. Ben
Sires . . . .et . . . . .TWITMAC
At his request . . . .attached below is the schematic prepared for Mitch of his early generation Freshman, after his reverse engineering of its connections and parts.
73's de Edd
Artificial intelligence usually beats real stupidity.
FRESHMAN MASTERPIECE SCHEMATIC: 
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::Check your email for additional information.
::Mitch
::Many thanks for the info Mitch. I thought that both transformers should be changed and thanks for your help
:Ben
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: : : : : : : : : : : :Sires . . . .et . . . . .TWITMAC : : :At his request . . . .attached below is the schematic prepared for Mitch of his early generation Freshman, after his reverse engineering of its connections and parts. : : : : : : : : : : : : : : : : : : : : : : : : : :73's de Edd : : : : : :Artificial intelligence usually beats real stupidity. : : : : : : : : : |
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::::The Freshman Master Piece that I am restoring has an open winding in one of the audio transformers. Does anyone know of a replacement or where I can find a used audio transformer? I noticed that Radio Daze has a replacement audio transformer for a Radiola III that seems to have similar winding specs. My radios circuit is different from the schematic listed on Nostalgia Air. It does not have the c battery terminals listed on the schematic. Thanks for your help. Ben
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:::Check your email for additional information.
:::Mitch
:::Many thanks for the info Mitch. I thought that both transformers should be changed and thanks for your help
::Ben
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Thank you Edd.
A friend in need, alas in deed.
Ben, post as to the help that this may be helpful?
Mitc
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:: :: :: :: :: :: :: :: :: :: :: ::Sires . . . .et . . . . .TWITMAC :: :: ::At his request . . . .attached below is the schematic prepared for Mitch of his early generation Freshman, after his reverse engineering of its connections and parts. :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: ::73's de Edd :: :: :: :: :: ::Artificial intelligence usually beats real stupidity. :: :: :: :: :: :: :: :: :: |
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:::::The Freshman Master Piece that I am restoring has an open winding in one of the audio transformers. Does anyone know of a replacement or where I can find a used audio transformer? I noticed that Radio Daze has a replacement audio transformer for a Radiola III that seems to have similar winding specs. My radios circuit is different from the schematic listed on Nostalgia Air. It does not have the c battery terminals listed on the schematic. Thanks for your help. Ben
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::::Check your email for additional information.
::::Mitch
::::Many thanks for the info Mitch. I thought that both transformers should be changed and thanks for your help
:::Ben
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:Thank you Edd.
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:A friend in need, alas in deed.
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:Ben, post as to the help that this may be helpful?
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:Mitc
:Many thanks to all of your help. Hopefully the Freshman will work in the near future. Ben
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:Your schematic has a bug in it
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: : : : : : : : : : : :Sir Dennis . . . . . Esq. : : : : : Thet 'tain't no "bug" . . . . thets an infant Diptera Calliphoridae , being held in a captive trance state . . . . . from that close electrostatic field . : : : : : :73's de Edd : : : : : :People can be divided into three groups: : : :Those who make things happen, those who just watch things happen, and those who wonder what the hell just happened. : : : : : : : : : |
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::Your schematic has a bug in it
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:Hello everyone,
I am posting some photos for Ben to help identify it and help hi get it working.
All input will be appreciated.
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:: :: :: :: :: :: :: :: :: :: :: ::Sir Dennis . . . . . Esq. :: :: :: :: :: Thet 'tain't no "bug" . . . . thets an infant Diptera Calliphoridae , being held in a captive trance state . . . . . from that close electrostatic field . :: :: :: :: :: ::73's de Edd :: :: :: :: :: ::People can be divided into three groups: :: :: ::Those who make things happen, those who just watch things happen, and those who wonder what the hell just happened. :: :: :: :: :: :: :: :: :: |
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:::Your schematic has a bug in it
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::Hello everyone,
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:I am posting some photos for Ben to help identify it and help hi get it working.
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:All input will be appreciated.
Hello everyone, just a short note to thank everyone for info regarding my Freshman Masterpiece. Finished the electrical restoration and the radio works, much better than I thought. From research info, I think that it has a Franklin Console cabinet. Many thanks to all. Ben
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