Fried hotend MOSFET - how to bypass? (no replies)

Hi.

After having my reprap in a box for some time, I decided to start it up. Only problemwas that the MOSFET of the hotend had taken some damage. So when I turned on the heater it started burning.

"No problem, I will change to another MOSFET" I thought, I've got some IRFZ44N lying around. Well, not so easy, because the connector on the card has burnt also, the one on the source leg.

Now my question is how do I fix this? Can I just pull a wire from the 12V power supply directly to this leg? Do I need to connect it elsewhere? And how do I know I didn't burn anything else?

Thanks in advance for your answers.

Regards
fizz