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. First, a foil sticker containing a 4-digit serial number was affixed to the chassis over the A23373. Fifth tube is the pre-driver. We understand that some technicians recommend Ei or Preferred Series 7025 for this duty. Fender then switched to a serial numbering on the neck plate for all models.
Vintage Series, check neck date for specific year E4 + 5 digits E8 + 5 digits V + 4, 5 or 6 digits U. Per Blue Book and Fender Consumer Relations Department. The output tubes are not switched out for half power. Vintage Series excluded '52 Telecasters 1987 For U. They used a code like this: 606 — 645 The date is in the last three digits, after the 606 —.
Any 5U4 type is acceptable. The First letter equates to the Year and the Second letter to the Month. The serial number is B-073901. Vintage Series, check date on the neck for specific year E3 + 5 digits E4 + 5 digits V + 4, 5 or 6 digits U. Vintage Series excluded '52 Telecasters 1999 In 2000 the Z was added for the numbers. It must have good quality heater insulation. I'm glad to hear you are enjoying the amp! This is the channel 1 preamp.
Many silverface and some blackface amps have the exact week, month and year stamped insie the chassis. This is the phase inverter and vibrato tube. Third tube is the vibrato oscillator. These letters are the production date code for the amplifier. Vintage Series, check neck date for specific year E2 + 5 digits E3 + 5 digits V + 4, 5 or 6 digits U. Do not attempt to use 5Y3, 5V4 or 5U4 types.
Get these letters and I can help you. This tube need not be low-noise or low-hum, nor does it need to be tested for microphony. Do not attempt to use 5Y3, 5V4 or 5U4 types. You may also use 5V4 types or 5R4 types if they fit physically. Reissue amps also use stamped Date Codes. Most post tweed Fenders had trannys manufactured by Schumacher.
You may also use 5V4 types or 5R4 types if they fit physically. Most specifications for a given Fender instrument model change little if at all throughout the lifetime of the model. Using the 4 ohm setting at low volume does make it quite manageable and usable at lower settings. Some may have stayed in the U. Solid-state rectifiers do not wear out as tubes do, nor can they be replaced by the user.
This tube should be of good quality. Again, nothing does what the Super Reverb does. The chart below details Fender serial number schemes used from 1965 to 1976. Paul Linden has volunteered to fill in for Greg. Like Henry Ford, part of Leo Fender's genius was in optimizing the company's production efficiency. As mentioned above, many reissue models use serial numbers that don't really correlate to their age.
After a short period of overlap with the old system, the post-76 numbers will start with a letter that indicates the decade, followed by a number that indicates the year of that decade. Edit -- good idea on contacting Bruce Zinky the designer. Fifth tube is the pre-driver. 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. His guitars were built en masse by an entire factory, not a single luthier toiling over one instrument at a time. But other changes may be meant to deceive.
The second thing that was done was the addition of another number stamped into the chassis as a suffix to the A23373 serial number, e. Vintage Series excluded '52 Telecasters 1991 N1 + 5 or 6 digits N2 + 5 or 6 digits V + 5 or 6 digits U. Do not attempt to use 5Y3, 5V4 or 5U4 types. Second tube is second channel preamp, 7025 is specified. I've only had a bit of maintenance for the amp and it's working perectly Dear Guest: The serial number does not come into play when trying to date the product.
Did you read it first? Well, for the 4-digit serials affixed on a foil sticker, numbers as low as 0127 and has high as 3765 have been observed. This is the phase inverter. Third tube is the vibrato oscillator. I have 2x12 and 4x12 v30 cabs. Vintage Series, check neck date for specific year E4 + 5 digits V + 4, 5 or 6 digits U.