DATING FENDER AMPS BY SERIAL NUMBER, PART VI Without date codes from transformers, pots andor speakers, its not possible to predict amp dates by serial number. GUIDELINES FOR DETERMINING PCB STATUS OF DISTRIBUTION TRANSFORMERS General Electric Company did not use a date code prior to 1965. Sep 17, 1997Dating Fender Power Transformers. all the other date codes pots and such are mid 66. What got my attention was how hot the transformer is (335AC). Dating Vintage Guitars and Amps by SourceDate Code. It's called the sourcedate code, Transformers Coil Codes: 138 Stancor. EIA SourceDate Codes: Electronic components such as transformers, potentiometers, speakers, and some capacitors are often stampted with a date code indicating who. Transformer company EIA codes There are several ways of identifying a manufacturer, or particular part number of a component in most audio gear that's been. Usually single digit date codes are from the 1940's, Transformers Coils: EIA code: Stancor Other commonly seen manufacturers Company. In the absence of the rubberstamped date codes, EIA numbers taken from the transformers may allow you to determine the date of production of your amp. Fender Transformer chart: Model Name: Model: Power: Output denotes no transformer used: Fender transformer number conversion chart. Aug 31, 2016Greetings transformer experts. I have a Fender output transformer model that I'm trying to identify. The EIA date code is 606 4471 7. This The HammondLeslie age determination list was initially The color of the power transformer can help date an AO28 look at the can capacitor's date code. Fender Transformer Codes This directory contains USENET articles Mic has saved about guitars, equipment, pickup, techniques, players. ADDITIONAL MANUFACTURER EIA CODES. Code Manufacturer Part(s) 24: Becker: Speakers: 67: Transformers: 173: Erie: Resistors, Potentitomers: 175. Dec 23, 2014I had my Nicholls out of it's shell so that I could tighten up one of the input sockets, and I thought I would have a poke about to see if I could find any date. 14 rowsTransformer company EIA codes. There are several ways of identifying a manufacturer. Jun 22, 2007Hi, I'm new around here so I'm just jumping right in with a question. These are the codes from a couple transformers that are in an old Hammond organ amp. FENDER DATE CODES Date Code: Most DATING FENDER TRANSFORMERS, SPEAKERS POTENTIOMETERS USING EIA CODES EIA For example: a transformer code of. GE Appliances and Date Codes: How to to determine when your GE Appliance was manufactured from its serial number. MARSHALL DATE CODES Early Marshall through the JCM800 series. July of 1969 Marshall introduced the date coding system. Some of the older amps have an inspection. Fender Transformer Codes July 2nd, 2010. Dating system for transformers works on the speakers also.