Hard drive and power bricks are easy to replace if that is the TiVo problem
I have come home twice this week to every light on the front of my Roamio flashing. Unplugging it for a while and then plugging it back in has worked so far but from what I’ve read in google searches all of the lights flashing like that means it’s on its way out.
I’ve already had the power supply replaced once under warranty but when that happened all the lights weren’t flashing like this. The unit was just stuck in an endless bootup sequence. If it’s as simple as replacing the hard drive that is no problem since I already replaced the stock drive with a 2TB model. From the TiVo community forums it sounded like this was more of a permanent failure though.