Also, you were asking on the SPACE, according to U.M. p.56
1/4″ EXP jack is TIP_SLEEVE (TS “mono”)
1/4″ AUX jack IS TIP_RING_SLEEVE (TRS “stereo”)
If the actual jack is bad, it should not be too hard to fix…
I’ve also heard of contact/buggy issues fixed w re-seating the ribbon cables but am not sure if this would have anything to do w your problem…
