(Without Serial Numbers) USA Mfg’d The following transformer welders do not have serial numbers. The date of the manufacture for these units may be determined from the last three digits of the code number stamped on the nameplate. Units Involved:AC-225S, AC/DC-225/125, AC-275, AC-225 GLM, AC-225 SEARS Code Number Example: 9422-001 Code Year Month. Search by Serial Number Enter Serial Number. True 801340 TRANSFORMER, STEP DOWN 200VA/ 230VAC/VI/115VAC VO. True 801340 TRANSFORMER, STEP DOWN 200VA/ 230VAC/VI/115VAC VO. In Stock, ships today. View Full Details. List Price: $ 279.72. My Price: Add to cart. View Full Details. Example: Vibrolux Reverb with serial number A756254 should be a ’77, but the latest date-coded parts date it to 1978. Serum keeps asking for serial number. Some serial numbers have a letter prefix plus 4-digits instead of the usual 5- or 6-digits. Likewise there are some serial numbers with an extra digit (usually a zero) after the letter prefix.

Transformer Serial Number Database List

Transformer Serial Number Database List

I'm new to the site and been reading different posts regarding the Transformers and their serial numbers.
I had a prime for about a week and returned it because the screen was awful on it. I didn't get a chance to check its number, either. I was originally going to swap it out but Best Buy didn't have any more in. So, I was going to wait for the new 700 series, but I'm not so sure if it's worth the extra hundred.
I called Best Buy this morning and they received one in and I'm thinking of picking it up, but was wondering of theres a serial number of new batches I should look out for.
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