Hello & Welcome to Just Answer,
Sorry I didn't see your question earlier and to hear of the issue you are having with your GPS.
May I ask:
1) The FULL Make & Model Number of the device you are working with?
2) The AGE of the device?
3) WHEN this issue first began?
4) Does this happen when the device is NOT connected to any power source (running on internal battery only)?
I see it has been a few days and I just wanted to follow up to see if you have any more questions concerning this issue or if the issue was resolved.
I look forward to any further questions or results that you may have.
Thanks, ***** *****