I confirmed that that my HR23-700 DVR is getting power from the wall. However, there is no standby light and it won't turn on. I believe the fuse is blown. Since I don't have maintenance service with DirecTV (and I don't want to lose the programs on the hard drive if they were to replace the DVR), I'd like to try replacing the fuse. However, while the board supporting the the power input jack has a notice on it regarding the fuse, I can't identify the fuse. It must not look like any fuse I'm used to seeing. Please help.