Schematics, Service manual, or circuit diagram
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15 Cromwell models listed

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Year Book/
File Type/
Cromwell 10101950FileCromwell_Mercantile-1010-1950.Rider.RadioRadiopdfCromwell 1010 schematic circuit diagram
Cromwell 10101950RiderRider Volume 20Mercantile Stores1Cromwell 1010 schematic circuit diagram
Cromwell 10101950SM88-2Cromwell 1010 schematic circuit diagram
Cromwell 10201950FileCromwell_Mercantile-1020-1950.Rider.RadioRadiopdfCromwell 1020 schematic circuit diagram
Cromwell 10201950RiderRider Volume 20Mercantile Stores3Cromwell 1020 schematic circuit diagram
Cromwell 10201950SM89-5Cromwell 1020 schematic circuit diagram
Cromwell 10391949FileHMV-4910 D_4910 RG_4910 AW6_Windsor_Sherwood(Cromwell
pdfCromwell 1039 schematic circuit diagram
Cromwell 11391949FileHMV-4910 D_4910 RG_4910 AW6_Windsor_Sherwood(Cromwell
pdfCromwell 1139 schematic circuit diagram
Cromwell 2051948RiderRider Volume 17Misc WT Knott8Cromwell 205 schematic circuit diagram
Cromwell 6511947RiderRider Volume 15Misc WT Knott9Cromwell 651 schematic circuit diagram
Cromwell 6531947RiderRider Volume 15Misc WT Knott9Cromwell 653 schematic circuit diagram
Cromwell 65411947RiderRider Volume 15Misc WT Knott9Cromwell 6541 schematic circuit diagram
Cromwell 65451947RiderRider Volume 15Misc WT Knott9Cromwell 6545 schematic circuit diagram
Cromwell 65471947RiderRider Volume 15Misc WT Knott9Cromwell 6547 schematic circuit diagram
Cromwell 65601947RiderRider Volume 15Misc WT Knott9Cromwell 6560 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 08:09 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 =>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".

(302805 schematics* by 2170 different manufacturers indexed!)
Updated 19th. May 2022

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