How to Remove the Amp Chassis
"All valve/tube amplifiers have potentially lethal voltages within.
If you are at all unsure of electronic repair, please take your amp to a
qualified amplifier repair technician."
Firstly, make sure there are no mains power connected to your amplifier.
Then ensure that you have left sufficient time for all the valves/tubes
to cool down as the valves/tubes get EXTREMELY hot when on.
Then locate the 4 screws that hold the metal guard in place.
Then use a screwdriver to undo the screws.
Once this is achieved the guard should be removed
Then locate the 4 bolts / feet underneth the case and unscrew these.
CAUTION
THE CHASSIS IS NOW NOT CONNECTED TO THE OUTCASE.
Then using the "Roll cage" CAREFULLY remove the chassis (and faceplate) from the case.