Full video head cleaning info sent via DIRECT e-mail, as judging by what you say your camcorder does not appear to have the lens cap problem, as any that does suffer from it has the symptom of not being able to see anything on the viewfinder during (or before) recording. It should be be mentioned though that the D72 is one in a range of models that can develop it, and if any does provided its before the end of June 2009 a free repair is on offer, that is provided the owner is the original purchaser and with proof of same.

Although a blue screen can be caused simply by a dirty video head its a case of if you put the camcorder in "camera" mode as though you were going to take some video, can you see anything in the viewfinder? If you do not, then its 99% certain that the camcorder has the lens cap problem of a defective image sensor and which a free repair is on offer if you are the original purchaser of the device and have proof of.