I actually deleted it, seeing a broken vectrex every time I checked my youtube channel depressed the hell out of me, not to mention it didn't get much attention.
It's very similar to you're issue, mine has the distorted, unconnected vectors but without the violent shaking yours has. I opened it up a year or so ago, bought the best quality capacitors I could find, but gave up half way thru it. Don't know why but evey time I attempt to work on it (which isn't often) I feel so overwhelmed by it and just put it back down.