Please note: The IM150 Wireless Light & Color Meter is now part of the Datacolor family. For any support inquiries, please visit
https://spyder-support.datacolor.com/
I had the same issue with my new meter not turning on. It turned out to be a poor solder joint between the battery clip and the red wire connecting the clip to the printed circuit board. A quick re-solder step and the meter turns on.