Fix pinpoint salinity monitor?

[born]

I went to go do tank maintenance and my pinpoint salinity monitor was turned ON but it wasn't displaying any digits. The circuit board didnt have any water on it, the only thing I can think that could have caused this was that I had it stuck to double sided velcro and it fell off of that, but was only a foot drop.

anyone have any problems with their monitors or similar problems that know how to fix it?

[Madreefer]

3 x wireless thermometer

Ph monitor

Ph controller

All never lasted more than a couple of years. I've had no luck with any of their products. And not one of them has ever been dropped

[hillegom]

Take the batteries out for 5 min and re-insert the correct way.
Maybe just needs a reboot.