Schematics, Service manual, or circuit diagram
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38 Operadio models listed


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Source
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Operadio 11A551950SM113-6Operadio 11A55 schematic circuit diagram
Operadio 1335 ;Soundcaster1948SM37-14Operadio 1335 ;Soundcaster schematic circuit diagram
Operadio 19251930RiderRider Volume 1Misc Operadio16Operadio 1925 schematic circuit diagram
Operadio 19261930RiderRider Volume 1Misc Operadio16Operadio 1926 schematic circuit diagram
Operadio 1A1401948SM46-17Operadio 1A140 schematic circuit diagram
Operadio 1A301948SM34-15Operadio 1A30 schematic circuit diagram
Operadio 1A351948SM33-15Operadio 1A35 schematic circuit diagram
Operadio 1A451948SM48-16Operadio 1A45 schematic circuit diagram
Operadio 1A651948SM52-14Operadio 1A65 schematic circuit diagram
Operadio 1A70A1948SM47-16Operadio 1A70A schematic circuit diagram
Operadio 2478A1935RiderRider Volume 6Operadio1Operadio 2478A schematic circuit diagram
Operadio 2483A1935RiderRider Volume 6Operadio2Operadio 2483A schematic circuit diagram
Operadio 2677A1936RiderRider Volume 7Operadio2Operadio 2677A schematic circuit diagram
Operadio 478A1935RiderRider Volume 6Operadio1Operadio 478A schematic circuit diagram
Operadio 478AH1935RiderRider Volume 6Operadio1Operadio 478AH schematic circuit diagram
Operadio 483A1935RiderRider Volume 6Operadio2Operadio 483A schematic circuit diagram
Operadio 4841935RiderRider Volume 6Operadio3Operadio 484 schematic circuit diagram
Operadio 484A1935RiderRider Volume 6Operadio3Operadio 484A schematic circuit diagram
Operadio 484B1935RiderRider Volume 6Operadio3Operadio 484B schematic circuit diagram
Operadio 4A25E1950SM101-8Operadio 4A25E schematic circuit diagram
Operadio 4A30A1950SM102-9Operadio 4A30A schematic circuit diagram
Operadio 4A351950SM100-9Operadio 4A35 schematic circuit diagram
Operadio 4A50A1950SM102-9Operadio 4A50A schematic circuit diagram
Operadio 4A51A1950SM102-9Operadio 4A51A schematic circuit diagram
Operadio 4A551950SM100-9Operadio 4A55 schematic circuit diagram
Operadio 4M25C1950SM99-11Operadio 4M25C schematic circuit diagram
Operadio 52483A1935RiderRider Volume 6Operadio2Operadio 52483A schematic circuit diagram
Operadio 5301948SM37-14Operadio 530 schematic circuit diagram
Operadio 5311948SM37-14Operadio 531 schematic circuit diagram
Operadio 5483A1935RiderRider Volume 6Operadio2Operadio 5483A schematic circuit diagram
Operadio 6601937RiderRider Volume 8Misc Operadio6Operadio 660 schematic circuit diagram
Operadio 677A1936RiderRider Volume 7Operadio2Operadio 677A schematic circuit diagram
Operadio 678A1936RiderRider Volume 7Operadio3Operadio 678A schematic circuit diagram
Operadio 683A1936RiderRider Volume 7Operadio1Operadio 683A schematic circuit diagram
Operadio 71930RiderRider Volume 1Misc Operadio16Operadio 7 schematic circuit diagram
Operadio 823A1936RiderRider Volume 7Operadio4Operadio 823A schematic circuit diagram
Operadio 855AR1948RiderRider Volume 17Misc Operadio9Operadio 855AR schematic circuit diagram
Operadio Soundcaster ;13351948SM37-14Operadio Soundcaster ;1335 schematic circuit diagram

These radio, TV, record player, amplifier, amp and tape or cassette recorder schematics, circuit diagrams and service manuals are mostly high quality, very readable scans and will usually be Emailed within an hour or two, if I need to scan an item, or it's the middle of the night, here in the UK it is 21:42 it may take a little longer! If more than one schematic is listed for a model I will generally send them all, unless too big to attach!
Specialising in British schematics Roberts, Hacker, Bush, Pye etc. also American and German manuals feature strongly, search for what you need. Multi page manuals are Emailed as pdfs. Please Email or phone 0788 4425213 Thanks for looking, Mike.
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90V/1.4V Battery Eliminator

90V/1.4V battery eliminators available at £29 For other voltage combinations Email me!

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Fill in the "Make" and "Model" boxes, if you are unsure of the model, leave it blank and I will list ALL models for that manufacturer, similarly if you only have the model number leave "Make" blank and I will list similar model names from ALL manufacturers.
More explanation here. Some sources searched :-
Book Set KEY Years
J.F. Rider's Perpetual Rider 1920-54
Trader Service sheets Trader 1933-81
Beitman's Radio Diags Beitman 1926-69
Beitman's TV Diagrams Beitman 1947-70
Gernsback Radio Diags. Gernsback 1922-34
Empfanger Schaltungen ES 1928-57
RCA Service Notes RCASN 1923-52
Broadcaster Supplements Broadcaster 1934-42
Radio and TV 36 vol set RTV 1945-86
Radio and TV 5 vol set RTV5 1945-54
Crosley Service Suppls. Crosley 1929-42
My Pre-scanned Files File =>2022
The search logic is slightly "fuzzy" in that it's case insensitive and ignores punctuation so, model TR-510 is the same as tr510, and G.E.C is the same as "gec".

(303180 schematics* by 2171 different manufacturers indexed!)
Updated 25th. May 2022


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