OzFclass

On the weekend whilst shooting F Standard, and when attempting to chronograph loads I experienced a Labradar glitch in that on power up the blue on-light flashed continuously preventing setting to red to record velocities.

In attempting to diagnose the source of the trouble I removed the Micro SD Card Holder/Micro SD Card, powered up to find the fault disappeared.

The problem was an intermittent SD card Holder connection corrected by cleaning the connections.
Labradar does a system integrity test on power up, flashing panel lights indicating a fault.

Hope my experience is of value to others

Thanks for the tip, I've seen that before, probably fixed it the same way but without realising, packed up reset again another day