really appreciate your quick response, i will do it ASAP.
Now, I need someone whom I can brainstorm with, I think you are the right guy.
Here is the sequence of events
1. Spilled wine
2. Immediately 2-3 keys stopped working
3. I used the MB for 1 day, next day 1 entire row stopped working
4. I opened it and saw some dirt, so I used Air duster and cleaned the backside of logicboard very thorougly
5. I tried to start the Macbook, and it didn't start.
At this step, did the Air duster caused anything like some part got loose ???
"My guess is their was no damage to the Logic board with a wine spill."
6. I still assumed wine spill damage, and took out the logic board, I didn't see any liquid damage, but still I cleaned it. but ofcourse is till doesn't work.
How shall I debug this, I am thinking of buying a old MBP 2009, swap the logic boards to debug this problem, what do you think ??
I think the keyboard actually prevented the wine from reaching the logicboard, but the keyboard itself got damaged and is now shorted. I assume you only tried shorting the pads AFTER removing the thermal paste, if so, this is likely to have affected all the tests you performed since that moment. Try re-applying some thermal paste and put the heatsink back on (there's plenty of videos regarding this topic on youtube). Now, with everything back in place, BUT THE KEYBOARD STILL DISCONNECTED!!!, try shorting the pads, the Mac should now start up. Connect an external usb keyboard and test for other possible problems, if everything works you only need a new topcase :)