I have a Mitsubishi WS 55413 and am trying to remove the PCB on the right. I have it all unhooked except for the white wire attached to the flyback transformer. It has a rubber collar around where the wire comes into the Flyback and it doesn't pop off with a firm pull. I don't want to just yank on it for obvious reasons. My question is how do you disconnect it, so you can get the board out? Will it unplug if I pull hard enough or do I have to cut the wire and solder it back together when I'm done working on the board? Thanks in advance for any help offered.