Here's an odd one.
Brand new Beltronics STi will not turn on. Plug the coiled cord into the lighter socket and it goes tick, tick, tick etc and nothing on the display.
Not a power issue as I have tried the power cord with my old STi and it works fine.
Here is a clue. Hold down the SENS button and the clicking stops. Release the SENS button and the clicking starts again.
A microprocessor fault?
Anybody experienced this problem before?