I purchased a Roamio last December after having a Series 2 for eight years with no problems. Friday night, an electrical storm came through my area and when I turned the television on Saturday morning, I got a blank screen coming from the TiVo. Power was going to the unit (green and yellow lights on unit worked), but the TV registered "no input". I switched out the HDMI cable, used a different HDMI port, nothing changed. Thinking the unit was fried, I went to Best Buy and bought another Roamio. (I was not aware of the $49.99 exchange offered through TiVo.) When I got the new unit home, I activated it, went through a few updates, and all was fine for about five minutes. Another thunderstorm came through, even though it was not severe, and my tv screen went blank again. Same problem as before!! After an hour of dealing with technical support and customer service, they agreed to send me another unit at no cost. So this is my question...are Roamios that sensitive to lightening strikes in the surrounding area? (I'm not talking about direct hits on or near your house.). I should also point out that all of my electronic equipment (including the Roamio) is connected to surge protectors and nothing else was damaged on Friday or Saturday. My Series 2 survived several hurricanes with no problem. How do I prevent this from happening again with unpredictable summer thunderstorms (many severe) looming ahead? Ideally, the unit could just be unplugged from the wall, but sometimes we aren't home when these storms come through. Anyone have a similar problem or any advice?