I have a Series 2 Directv unit. Recently it started freezing during both live and recorded programs and usually reboots shortly after. Sometimes it loses sound and/or turns black and white before the freezing. We used to have 2 satellite inputs going into the machine. We moved it to another room and only connected one input and it seemed to fix the problem for about 2 - 3 weeks. We're now seeing the same issues again. From what I've read on-line, it seems like it could be either a bad hard drive or motherboard. Any advice? Thanks.