I you don't solder do you have a friend who does?
Tools required would be a soldering iron, solder and I generally
use needle nose pliers for loosening/tightening the nut securing through chassis RCA's.
Can't tell from the photo I posted, but assume that non-conductive washers are used to isolate the RCA unit from the case/chassis, plus the RCA shaft would need to centered without any contact to the chassis (not a big deal).
This said, due to the small gauge of the wires and whatever material is insulating them it's a job best performed by someone experienced with de-soldering/soldering small wires.
Due to declining vision that started 10 years ago I would have to use heat sinks (just small copper flat jawed alligator tips) and would also insert a male RCA into the new female plug being installed (additional form of heat sink), but 15 years ago it would have been a simple 5-10 minute job without using the extra "suspenders".
Just saying that replacing them is not difficult (they are not board mounted), but you need to have experience working with small gauge/short wires that you wish to remain intact/useable.
DeKay