Data logger failing on start up

I’ve just received the GPS Data Logger and it seems to be failing on start up far too often. When turned on it should flash the STAT lights a few times each, but I don’t see that much anymore. It was flakey at first, but now it’s as bad as about 19/20 times that I don’t get the start up sequence.

Because it’s been like this since before I changed the GPS module to use RMC and GGA I’m thinking I have a faulty board. If so it has probably happened to someone else, have there been any similar reports?

*****Edit 1

I’ve just checked the battery pack and it is putting out 4.5V, so I guess it could be a problem but the spec sheet said 4-7 should work. It has enough to run the power light just fine.

*****Edit 2

It’s now hooked up to a power supply, 6V is definitely getting to it and the start up sequence is still failing :frowning: