If that is the case, I would return the unit to Garmin so that they can repair or replace it under the 1 year warranty which comes with ALL of their GPS units.
The procedure to do that starts with contacting Garmin so that you can get a Return Material Authorization (RMA) number. Here is the rest of the information.
To Obtain Warranty Service Please Complete These Two Easy Steps:*** STEP 1 ***
Contact Garmin Technical Support to receive an RMA number.
Call or e-mail a Garmin Technical Support Specialist to describe the problem and request a return material authorization (RMA) number. You will need to provide the unit's serial number (if applicable), your return shipping address and a daytime phone number.
Phone:1-800-800-1020 or(NNN) NNN-NNNNbr />Fax:(NNN) NNN-NNNN/p>
*** STEP 2 ***
Ship the unit, along with the RMA number, to Garmin.
Once you have received the RMA number, you also will be told what dock number to include in the shipping address. Ship the unit (insured) to the following address and include the assigned dock number:
1200 E. 151st Street
RMA Number: (insert your RMA number here)
Dock Door (insert the dock number here)
Olathe, KS 66062 USA
Just so you know, their support phones are only open weekdays, as shown below:
North America - Consumer Products
Monday - Thursday: 8 AM - 6 PM, Friday 8 AM - 5 PM Central Time (closed holidays)
US:(NNN) NNN-NNNNbr />US Toll Free: 1-800-800-1020
Please let me know how it goes or if you have more questions.
Good Luck, Greg A.