My Dual Shock doesn't vibrate anymore.

[Specineff]

Suddenly, my PS2 stopped vibrating the controllers whenever I was playing either Rez, or MGS3. I have checked the controller in another PS2 and a PS1 and it's working fine. Something to do with the controller port. I have checked around the web and other than those paid guides (which sometimes don't have what you need) there's nothing about repairing the controller port. Any help will be greatly appreciated. Everything else works, except for the vibration.

[TalkingOctopus]

Here's the pinout:

http://pinouts.ru/Game/playstation_9_pinout.shtml

I guess you could make sure pin 3 is connected, but I wouldn't anticipate an easy repair.