Until Thursday, when switched on, and on the HDMI-1 channel, which the TiVo box is connected to, if the TiVo was off, after about 5s, there would be a message about "No Input" with an option to turn the TiVo on via the smart remote, or close. Close took you to the next menu for "input list".
Now, when turned on with HDMI-1 not on, it just sits there.
No updates to TV *or* TiVo box for a while.
Any ideas ?