Starter box problem

[tellor]

Hi All,
I have a starter box problem. When pressing down on the box the connection that makes the circuit shorts out. Now the starter box doesn't work
I have disconnected the motors and have looked for a short but can’t see any obvious. No wiring is shorting on the starter box nor touching the motors. I am thinking the motors have given up, I have checked using a meter but they appear to be ok

The Lipos are both OK even though there is no fuse in the system (might put one in now)

Help!!!!!!!!!!!