Schematics, Service manual, or circuit diagram
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13 Triplet models listed

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Year Book/
File Type/
Triplet 11251934Rider4Triplet1Triplet 1125 schematic circuit diagram
Triplet 1125 ;Test1934Gernsback5Radio873Triplet 1125 ;Test schematic circuit diagram
Triplet 11501934Rider4Triplet1Triplet 1150 schematic circuit diagram
Triplet 1150 ;Oscillator1934Gernsback5Radio873Triplet 1150 ;Oscillator schematic circuit diagram
Triplet 1151 ;OSC1934Rider5Triplet1Triplet 1151 ;OSC schematic circuit diagram
Triplet 11661934Rider4Triplet2Triplet 1166 schematic circuit diagram
Triplet 1166A1936Rider7Triplet1Triplet 1166A schematic circuit diagram
Triplet 1200 ;Tester1934Rider5Triplet2Triplet 1200 ;Tester schematic circuit diagram
Triplet 12101935Rider6Misc Triplet33Triplet 1210 schematic circuit diagram
Triplet 1210A ;Tube Tester1936Rider7Triplet2Triplet 1210A ;Tube Tester schematic circuit diagram
Triplet 1220A1936Rider7Triplet1Triplet 1220A schematic circuit diagram
Triplet 1231 ;Signal gen1936Rider7Triplet1Triplet 1231 ;Signal gen schematic circuit diagram
Triplet 1503 ;Tester1936Rider7Triplet4Triplet 1503 ;Tester 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 09:34 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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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 =>2021
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".

(292135 schematics* by 2107 different manufacturers indexed!)
Updated 26th. Oct 2021

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