Dead on arrival 1967 #Selmer Treble 'n Bass Fifty Mark II - a real #sleeperamp.
#tubeamprepair
Schematic and analysis: https://www.freestompboxes.org/viewto...

00:00 intro
00:55 peanut bonanza
01:26 diagnosis - problems
03:03 fixing the power section
08:15 checking voltages
10:11 firing it up - it's alive!
12:50 pilot light & switch
14:30 normal channel demo
17:00 bass channel demo