Installing Your Tube Chart
Step 1 - Locating Your Tube Chart

1.1) Combo Amps (Champ, Deluxe, Twin Reverb, Super Reverb,  etc.)
Generally speaking the majority of Fender combo amps up until 1968 have their tube charts glued to the left side of the cabinet when looking from the back. Some known exceptions are the Blackface Princeton Reverb and Champ amps from 1964 and onwards that were the right side of the cabinet when looking from the back.  Some other exceptions the late 40’s and early 50’s tweed amps where the charts could be on either the left or right sides of the cabinet.  Starting in 1968 with the Silverface amps, the tube charts move to the right side of the cabinet when looking from the back.

1.1.1 - Location: The chart is usually positioned roughly in the middle of the left side of the cabinet so it is clearly visible between the upper and lower back panels. See pictures for examples:
                            
1.1.2 - Orientation: Most combo amps have vertically orientated tube charts (ie: tube icons or tube designations are vertical to the bottom of the cabinet “II”). The exceptions are many of the 50’s tweed amps where the tube charts are horizontally orientated (ie: tube designations are horizontal to the bottom of the cabinet”=”).  See example below:
1.1.3 - Placement: The placement of the charts in the 50’s and early 60’s was quite clean and precise with the charts being glued flat and straight. Once you get into the mid to late 60’s the charts were just slapped on and many are misaligned, crinkled and have unglued edges.  
1.2) Piggyback Amps (Bassman/Bandmaster/Showman/Tremolux)
Generally speaking piggyback amps have the tube charts glued to the right side of the cabinet when looking from the back. The right side was chosen as the power cord retainer clip is screwed to the left side which does not leave much space for a tube chart. The charts are almost always vertically orientated to the bottom of the cabinet (ie: tube icons are vertical to the bottom of the cabinet).
Step 2 - Gluing Your Tube Chart

2.1) Combo Amps

Now that you know where your chart should be located you need to glue it permanently to the side of the amp cabinet.

2.1.1 – Rubber Cement: Fender used a type of animal or hide glue to attach the tube charts to the side of their amps. Since it is unlikely that you will have access to this original type of glue we recommend using a non-water based paper glue like Elmer’s "Rubber Cement". Unlike water based glue (ie: white wood or carpenters glue) Rubber Cement dries quickly, will not be absorbed by the paper and will not come through in blotches on the front side of the tube chart.
2.1.2 – Spray Adhesive: Another alternative that many people have used with success would be one of the numerous spray adhesives on the market today. Most of these require you to spray not only the back of the chart but the surface to which it will be glued. To avoid excessive overspray in the amp cabinet you should mask off the area around where the chart will go before spraying.
Note: Water based glues like white wood glue or carpenters glue are not recommended as they are slow drying, leave air bubbles and can be absorbed by the paper creating blotches or stains on the front side of the tube chart.


If you have any questions please e-mail me amprepair@xplornet.com. .