Well after pulling the cable off of a damaged one, which I now regret, I found that what is holding the cable to the circuit board is some kind of glue/conductive stuff. Must be a mix of glue and tiny pins or balls, like elastomeric connector only held by glue. So I heated up the entire thing to 70c then had 200c hot air blowing on the glue/conductive end of the cable while I press the glue back down with a metal end of my tweezers trace by trace. This had restored a completely dead display to a glitchy display. Did it again and same exact issue. What that project virtual boy site did not mention is that the other problem is the motherboard end of the flex cable is also a problem. I plugged it in half way and perfect display! Seems the contacts become damaged from the pressure of the connector over time. So I found a permanent fix a more professional way then burning off part of the cable, atleast I hope, only time will tell. Worked on my failed attempt display also, trying my other two displays from my last virtual boy now.
http://imgur.com/a/yzTY6