Have you tried changing the source to something other than the PS3 to eliminate that as the problem? Do you have a regular Blu-ray or DVD player?
If the problem is indeed with the projector I doubt it's user fixable and you should contact Panasonic repair immediately...although I'm not sure what kind of response you'd get during a holiday.
Panasonic National Service Center
14206 Overbrook Road
Leawood, KS 66224
913-685-8855 (Projector Administration / Support)
All I Really Need to Know I Learned in