Gnolivos maybe your hum problem is associated with the ground wire not making good connection to the circuit board.
Gibson printed circuit board.
Includes output jack connector nuts and washers.
Specific to gibson electric guitars including les paul standard custom traditional classic studio 50 s 60 s tribute lpj etc.
One near new standard pot assembly circuit board from a recent gibson les paul electric guitar.
Pup connectors and more.
1956 gibson ga 40 description 15w cathode biased combo amplifier.
Bridge pickups switch and ground connections are clearly labeled for easy solder less wiring.
Gibson quick connect printed circuit board with push pull coil splits.
If this were my instrument i would open the control cavity again plug it in and wiggle that light green plastic thing that is near the switch.
New pcb style gibson electronics.
Made in the usa price 1000 build 2 channel hand wired valve combo with tremolo power rating 4w valves 2x 5879 2x 6v6 1x 5y3.
A switch or jack is not included.