How can i repair the input jack that connects to my Sky plus box?

After moving my Sky plus box the input 1 cable decided to provide no signal. I switched the inputs over and by plugging the input 2 cable into the input 1 connection I can get normal signal but can't record.

I'm pretty certian that it's the connector on the input cable so i need to know how to replace it.

Any thoughts? PLEASE!! if not, it's the friendly people at Sky and a rather unreasonable £65 engineer fee!!