Reconnecting Failure

Hello all,
I have the early Tablo lite (black box) running from wireless wifi.
Its been working relatively well for several years.
Last week while watching over the air tv ,with no warning the tv screen goes blank and says “RECONNECTING TABLO” followed a minute or two later by “RECONNECTION FAILED”. So now I cant rewind to see what I missed and if I paused the show during broadcast, I lost the whole thing.
The tablo is connected to the antenna, then directly connected to the tv via HDMI cable. Would a momentary wifi blackout cause this?
This is the 3d time its happened at about the same time of day.