XFSP, you will need 4 (or 5) things :
1) A hot soldering iron
2) A solder sucker or desoldering braid
3) A couple of hours to spare
4) A roll of solder
5) (optional) A mate who knows a bit about electronics and soldering if you are not up to the task.
XF dashes (especially the digital variety) suffer from dry (bad) solder joints throughout. Check in particular the joints on the plugs that connect the dash up to the vehicle wiring harness. Also, the 'digital' (puke!) module itself tends to suffer too; it is a complex piece of work! Be careful to take antistatic precautions when working on the digital section. Please note too, even if a solder joint LOOKS ok, it may not be, so desolder it and put some nice fresh solder on it. If you have any questions please let me know : I will try and assist you remotely!
Enjoy!
Kendall.