Tech 21 Amp Serial Number Year Decoding
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Fender Tube amp codes: 1953-1970 - (look for a 2 letter code stamped on the tube chart inside the back of the amp)- the first letter is the year, and the second letter is the month. An amp stamped NA would have been made in Jan. of 1964. Here is a list of the first letter showing the year of manufacture. These codes have nothing to do with the serial number that is stamped on the right rear of the chassis - Those numbers are posted below.
EIA numbers taken from the transformers may help you to determine the date of production on amps that fall between the different dating schemes. These numbers always begin with \"606\", and are followed by three or four digits in various combinations. If three digits are present, the first digit would refer to the year i.e. (\"7\" would mean 1967). If four digits are present, the first two digits refer to the year i.e. (\"66\" would mean 1966). The last two digits would refer to the week of the year i.e. (\"26\" would mean the 26th week or approximately June). An example would be: EIA 606-4-21 would mean the 21st week of 1964.
KOHLER engine identification numbers (model, specification and serial) hold the keys to efficient repair, ordering the correct parts and engine replacement. These are printed on a silver decal, which is normally affixed to the blower housing of the engine. Make a note of your engine identification numbers in your owner's manual for handy reference.
The process of designing and building printed circuit boards necessitates the use of various part numbers to ensure that a given electronic device can be repaired or replaced in the event of failure. As the boards are manufactured over months or years, the manufacturer may change parts or the entire design. In some cases, boards will have individual serial numbers to facilitate repairs and modifications. This traceability helps technicians see that the correct parts are installed.
Instructions1 Look for the part number identifying the built up circuit board. In many cases, there will be two numbers printed on a board. One identifies the circuit board with an individual part number. The other part number will be for the board complete with all its components. Sometimes this is called a circuit card assembly (CCA) to distinguish it from the basic board without components. Near the CCA number, a serial number may be stamped with ink or handwritten. They're usually short, alphanumeric or hexadecimal numbers.
2 Look for a part number etched into a large wiring trace or a ground plane. These are solder-coated copper, sometimes with the manufacturer's logo, a CCA number, and perhaps a patent number cut out of the metal. Some serial numbers can be readily identified by the inclusion of \"SN\" or \"S/N\" next to a handwritten number. Some serial numbers can be found on small stickers affixed near the CCA part number. These sometimes have bar codes for both the part number and serial number.
3 Use a serial data communication program to access computer memory for serial number information. This means of extracting computer information is most likely to be found in a professional repair facility. In automated test equipment, this is usually a subroutine that fetches the unit serial number, identification and modification status for CCAs, and even identification for individual microcircuits. In WinViews, for example, entering \"PS\" on the command line will cause a computer to return its present status, including the serial number, modification status and more. Serial data communications programs are useful for these simple queries.
The first 2 are the year and the second 2 are what week it is. I work in the Q.C. Department there and make the serial plates all the time. Hope this information helps some people out - A.O.S. employee.
@Mike Marcoe, Thanks for nice photo of your data tag and giving us the serial number. Using the Months table above on this page, I would say that the M stands for December and the 72 is for the year 1972. So yes, it could very well be original to the home. Nice long life.
My serial number is 800-M-72-09519 Model number is KGA 40 800 The home was built in 1972. Could this be an original It was replaced just this morning due to a leak and some corrosion. See attached image for a screenshot. Mike Marcoe
@Lolita Smith, I'm assuming you have an AO Smith water heater since you're on this page. If so, please see the decoding example and corresponding table shown above on this page: Example: Ser# FB00A123456 decodes to F=Factory code, B=month code using A - M for January - December (the letter I is not used) and the next two digits encode the year. So your serial number indicates: M=Factory code, C=March, and the 00= the year 2000.
@Steve Smith, Using the information and examples above on this page, that serial number would be January of 2000. The A is for the month and the 00 are the year. How old is the house where this heater is installed What are the country and city Are there any service tags or is there a manual with the heater (and what's the publication date of the manual) Please attach a photo of the data tag
@Rhonada Pierson, Start with a note of your building age so you know which of the decoders given at page top is most likely to be right Current AO Smith water heater date code Ser# YYWW123456 example 1604123456 decodes to YY=Year=2016 and WW=Week No. 04 of that year. However on some AO Smith water heaters, particularly older models, you'll see a confusion of letters and numbers in the serial number that may be decoded into manufacturing date as shown below. Older AO Smith water heater date codes Ser# YYWW123456 - example: Ser# 9902123456 decodes to year 1999 and the week 02 - or early January. This A.O. Smith water heater date of manufacture code has been used since 2008. Ser# MMYY1234567 - example: Ser# 03991234567 decodes to March 1999 this older style AO Smith water heater date code decodes as shown where MM = month and YY = 2 digit year. Ser# MYY1234567 - example Ser# B0112344567 decodes to February 2001: the first letter encodes the month using A - N for January - December (the letter I is not used) and the second two digits encode the year. Ser# FB00A123456 decodes to F=Factory code, B=month code using A - N for January - December (the letter I is not used) and the next two digits encode the year. - example: Ser# GB92-03123456-789 decodes to Factory ID=G, Month=B or February, Year=92 or 1992. Ser# N69-C-YY-12345 decodes provide year in the pair of digits shown as YY - found on water heaters from the 1970s
As your serial number format doesn't exactly match the examples we've found for de-coding AOS water heater age, a guess isAD6A067772Ser# FB00A123456 decodes to F=Factory code, B=month code using A - N for January - December (the letter I is not used) and the next two digits encode the year.- example: Ser# GB92-03123456-789 decodes to Factory ID=G, Month=B or February, Year=92 or 1992. so AD - D = April and 06 = 2006Let's do a sanity check: how old is the house where this heater is installed What are the country and city Are there any service tags or is there a manual with the heater (and what's the publication date of the manual)Please attach a photo of the data tag
Can't say Rosemarie as we have not a shred of data, just six words of text.But if your water heater is an AO Smith unit, take a look at the data tag on your heater, find the serial number, then compare it's format and characters with the AO Smith water heater decoding guides given above on this page.You are also welcome to try the \"add image\" button to post a photo of your heater's data tag.Knowing the country, city, and age of the home are also useful.
Jack,AO Smith water heater age decoders are given on the page above.Your format SN # F06A147109 looks closest to this decoding example given above Ser# FB00A123456 that's explained in the article, as Ser# FB00A123456 decodes to F=Factory code, B=month code using A - N for January - December (the letter I is not used) and the next two digits encode the year.- example: Ser# GB92-03123456-789 decodes to Factory ID=G, Month=B or February, Year=92 or 1992.but it's not an exact match.1. Is this an A.O. Smith water heater2. if so and if it doesn't match the known codes we can guess at 2006 or you could try asking them info@aosmith.nl3. Let's have a \"sanity check\" - what are the country and city of your water heater and what is the age of the building where it's installedThe company's more-recent water heater data tags encode the year asYYWW123456 where YY = year and WW = week number from 1-52Please attach a sharp photo of the data tag found on your water heater by using the add image button
The original released 420 GB HDD PS4s had manufacturer serial numbers of the form CUH-10XXA; a minor modification with a different form of Wi-Fi Microstrip antenna was registered in mid 2014 as part numbers CUH-11XXA.[1][2]
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