I think I figured this one out with the help of Competition Electronics.

I missed the very slight hit on the front of the chrony.

I seems that the LED\’s in these things are very fragile, and it broke from the vibrations.

VERY disappointed to learn that this is not designed to come apart for simple cheap repairs.

Designed correctly one could easily swap out the sub $5 LED display, but because of the difficulty of even opening
the case they force you to send it in.

And that is assuming that they would even sell me a replacement LED.
Which I even doubt that they will do.

Not pleased with these devices all around.
They are not robust and they are not user serviceable.