Fender Twin Amp 1994 Service Manual - page 17
TECH NOTE # TN96 - 3
PAGE:
2 of 2
To gain access to the solder side of the PCB, disconnect the Black wires from CP1 &
CP2. Disconnect the wires at the Stand-by switch. This will allow the PCB to be tilted up
from the rear.
Remove the old style HIGH/LOW OUTPUT switch & wires. Note the location where the
Blue and Brown wires solder to the PCB.
Early revision (A-D) PCB's are silk-screened "TO OUTPUT SWITCH", "BLU" & "BN'.
Solder the pair of White switch leads to the two points labeled "BLU". Solder the pair of
Black switch leads to the two points labeled "BN". Revision "E" PCB's are silk-screened
"TO OUTPUT SWITCH", "WHT" & "BLK". White leads to "WHT", Black leads to "BLK".
Re-install the PCB. Verify proper switching of the B+ and negative Bias voltages.
WARRANTY CLAIM INSTRUCTIONS:
The above modification should be performed on any '94 Twin Amp requiring service in
or out of warranty. For proper labor reimbursement, please indicate the Tech Note
Number TN96-3 in the Authorization Code Box (Box # 12) on the Warranty
Reimbursement Form. Labor reimbursement = 1 Hour.