Caporegime
Well you asked if it could get any worse.I say go for it, I repaired my Xbox 360 myself and after a few nervous moments it was a great feeling seeing it work.
I've read fixes about pushing down on certain points sorts it out. So don't even need to dismantle it. Others is remove the casing and blast it with compressed air etc...so it's not major surgery either way. What have I got to lose?