need info on mitsubushi vs45va2 projection tv,getting audio and no video,and i have no remote
How is it connected? If you're using component video and the green cable or plug is bad/unplugged, you'll lose the picture completely. If you can borrow a universal remote (or have been thinking about getting one), once you set it up for that model, it should be able to control the TV. Otherwise, go to the Mits website and look for your model for any pertinent info. If you find nothing, call them and ask for instructions.
Any time you lose audio or video, try another set of inputs and look for loose connections. If the cables have any spices, look there first.