I've had a Philips 8" digital photoframe LCD 8FF2FPW for some years and have not used it. Now that I am trying to use it, I cannot even turn it on. I used the supplied AC-DC Power adaptor and connected the cable from the photo frame to a power outlet and used the other end of the adaptor and connected it to the frame...but I cannot even get the the frame to turn on. There does not seem to be any damage to the frame. I had never even opened the box. Any ideas as to the problem?