I buyed a Arduino GSM Shield on Arduino Web Store, back in March/2013. I tested it (examples) and it does everything I want to.
Now, I have my software almost done and the last piece was the GSM part... So I take the shield out of box and started to test it again (with examples on IDE). Initially, it takes too much time to establish connection to network and give me feedback... I needed to restart the process (resetting) but it ends to work. But now, a few tests later (in about an hour), the modem doesn't power up anymore. Status LED doesn't light up.
I'm using the shield with original Arduino Mega 2560, Pins 2 and 10 are connected and SIM card is into the bracket. I tested powered Arduino with 9V DC adapter and only by USB port. With debug enabled, on TestGPRS example, I received this: "AT%13%".
I've read about jumper CTRL/D7 pad, which power the modem. Mine is soldered by default. I can try to remove the solder and use Power button but I don't want to touch anything before an opinion.
Does anyone knows whats the problem?