A couple of things to try-
- New battery. Long term storage with the battery in can cause the battery to run down. If the battery runs down, the dot will begin flickering or acting up in other ways.
- Tightening the battery cap a little harder. Sometimes the cap is not tight enough, making the connection less than adequate.
If none of those things fix it, please put in a call to our customer service department and they will get it in for a look. Their number is 800-426-0048 ext. 6
Thank you and please let me know if you have further questions. I would be happy to help.