Unanswered Robo 3d r1 heated bed issue (short?)

After many successful prints using matter control and subsequently simplify 3d the bed stopped heating. I was able to elevate the extruder head temperature, but the bed temp stayed at ambient. I removed the bed from the printer to start some troubleshooting.

The first observation was that the connector required pliers to uncouple the bed from the wiring harness. Inspection of the connector revealed that the white wire (on the bed) had an over temp, perhaps a short. I believe that this fused the white wire connections in the bed white Molex.

I read an older thread that indicated that there may have been a change to a more robust Molex connector.

I would appreciate any tips on how to proceed from this point. A point of background, I had just removed the bed to reattach the magnets to the bed.

Thanks in advance.