Totally screwed up fixing 1st ps2... all pins where the controller ribbon goes to motherboard have come clean off. So on to 2nd ps2... Different model so I cant swap, Anyhow..2nd PS2 dies as soon as I turn it on. Red light is on untill pressed then NUTHIN . Could this be the fuse ps1 Ive read about? If so is this something I need to desolder and resolder? I seem to be a bit rusty on that whole thing!!

if ps1 had gone you would have no power at all

What exactly was done to the second PS2 ??? or did you use the parts off PS2 #1 to fix PS2 #2 or was it vise versa its hard to determin the problem when all you have is a sketch of it

you said the pins on the Controller port ribbon came off... how far off did they peel???
I had the same problem with one of mine that I picked up cheap v5 all I did was re-lay them down and cut it ( the ribbon itself) down a little to expose enough plate to connect??

and some version are compatable with others ???