Very faint sound - EX5L

I was just given a EX5L but there is only a very faint sound coming out of it at maximum volume.

I thought it might be the amplifier section but I also have a very faint sound when using the headphones or the line out into another power amplifier.

Something seems to be crashing the signal somewhere but I'm not good enough to figure it out by myself.

I looked at the circuit and nothing seems damaged, the capacitor don't look popped.

The only thing broken is the pedal cable. I don't know if this could be the reason behind this problem
I do have the cable in good shape and the connector, but all the individual wires have disconnected or broken from the connector and I don't have the pinout to repair it.

If someone has the pinout so I can repair the pedal cable, I might try it and see if it fixes my problem.

Thank you