I have an Hitachi 56 inch Projection tv model#57F500A. The other day I turned it on and the power indicator on the front came on but no picture. I also noticed that I can turn it on with the remote but it will not turn it back off. I looked at the power board and one of the green led's did not light up. I read a forum that mentioned this same problem and the person changed a 3000ma pico fuse,E907,that fixed the problem. I checked E907 and it is open. My question is, if I replace the pico fuse will this fix my problem or do I possibly have a problem with a chip.