Since looks like I'm the only one to have this monitor, I went ahead and played around with. The previous owner seems like he used a GREEN wire for GROUND. I traced the wires and at the end, one of the green is sliced to a black wire. That solves the 2 GREEN wire. Well everything worked but the colors are no good.
Now for a question on this common problem. Will a CAP Kit fixed color problems ? I tried adjusting the R G B pots but it a no go..TIA