stencullz

I just got an intellivision a couple months ago, but the audio/video port is loose and worn out, I've tried holding it in a specific way so that it will make contact, but that only worked once, I've tried using similar cords like the one that came with my TSR-80, the cord that come with my sega genesis model1 as well as the one with my SNES and they didn't work. So I can confirm that it isn't the cord. Is there any quick or long term fix for this? Thanks