Greetings to you, friends. So I had the same problem. I'll tell you everything from the beginning ...
First time, i connect it with my phone, install official software from google market. Flir will work correctly. I take 2 pictures, it's ok, and i desided to disconnect flir for charging.
I connect charger and wait. When it fully charged i try to power on device, but orange led isn't change color to green and not change color. Flir isn't power on correctly now, phone cann't see him, and flir have no reaction to connecting charger to him (not blinking led near USB).
If connect charger thru USB ampere-meter and to device, that shows, that no current, but if i press power button about 15 seconds, button light goes out, and if kept pressed this button connect USB charger, then accumulator start charging (ampere-meter shows current about 650mA and under as the battery is charging). But if i release power button, she start light by orange color and nothing happens.
Solved the problem by disconnecting and attaching again the battery. It worked correctly with the phone, but by connecting the device to another phone the orange LED lighted up again and I returned to the same problem, but I could not solve it by the same method. The above recommendations do not help either. Symptoms are the same as for the first time.
What else can be done? I can measure voltage anywhere, resistance, if it need. Help me please, guys.