I finished a project a couple days ago using the Seeed GPRS Shield. Everything was working great so I installed it in a vehicle as a GPS tracker. Today it stopped working so I took it out of the vehicle and found that the Status and NetLight lights weren’t on. I tried power cycling the unit and still no luck. Won’t even turn on when I hold down the hardware power button. The small green PWR light on the other side of the shield is on.