Dating a fender bassman 100

This one seems to be from 1975 (Schumacher date code 606-5 …

on the OT) : OK, once the new PT is in place (a Hammond 290FEX) and the four 6L6GC changed, time to rebias this thing.

On this model, there is a balance bias pot and not a “real” pot to set the bias. Anyway, I removed it (and the amp works well after having serviced it)Another small issue : a very nice blue light in a 7025 tube : Air inside (and the getter is half gone, btw) : little break in the envelope …

Balance bias is easy : the minimum hum, the better ! and one of the triode does not work (bass channel does not make any sound) : Didn’t have any 7025 left, so I used a JJ 12AX7 “V1″ (low noise)Anyway, the baby can sing again !

These dates will tell when the original part was manufactured, but are not exact indicators of when the guitar was actually put together and finished.

Here is what the neck date and body date look like from a 1952 Telecaster: If you're not comfortable removing the neck of a guitar to peek at the date marker, I encourage you to take it to a local tech or luthier.

I also have one of the newer Fender Pro Reverb amps with an effects loop and a silverface Twin Reverb with a volume control.

Steve Goldner San Diego Hi Steve, Thanks for your questions.

Features like bolt-on necks and pickups wired into the pickguard all helped the Fender factory churn out guitar after guitar, day after day.

This can be a tall order for someone less versed in guitar history, but we do have some resources here on Reverb to help you out.

For starters, there's the Reverb Price Guide which has thousands of entries with pictures and details on various guitars and other gear.

I replaced the 40 years old Mallory caps (I keep them, maybe someday I will try to reform them ?

Whether it’s a vintage amp or a recent model such as this Fender Pro Reverb, hum can have several causes.

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