Hello & Welcome to Just Answer,
Sorry to hear of the issue you are having with your GPS.
May I ask:
1) The FULL Model Number of the device you are working with?
2) WHEN this issue first began?
3) HOW OFTEN has this device been used in the past?
I only ask because as these devices get older, often the battery wears out and causes these symptoms. If that is the case, often the battery can be replaced at a relatively small cost, and with just a small effort.
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, ***** *****