Welcome to Justanswer.com, my name is Dustin.I'm sorry to hear about the issue you are having, I will do my best to help you resolve it.
Your best bet is going to be to connect the GPSmap 276c to your computer , and then download and install the most recent software update for it..
That page has the download link, and also the instructions.. Updating the software may very well fix the issue..
if it doesnt, this company can give you a quote on repairing the unit.. http://satnavrepairservice.com/repair-satnav/garmin-repair/garmin-276c-repair/1523.html
If you have further questions, let me know.
I strive to provide great service, and greatly appreciate a 5 star rating clicked and submitted when you are satisfied.. I always answer follow up questions.Dustin S.Senior Technician and Network Switching Systems Operator / Maintainer.
Not a problem~ Though, If you came in through the free trial you may not have been charged. Honestly we technicians have no access to the accounting side of things, for any concerns about the free trial or refunds if you have been charged you would need to contact our customer service.
as far as the general answer, you had only asked for a place you could send the device in for repairs.
My normal approach to these situations is to exhaust all repair attempts before suggesting a client pay for actual repair services.. But you didnt ask for help repairing it yourself, so I sent one major step thats likely to help. If you want, or wanted more help then that, you h ave to say so! And if you dont understand the procedure, this is something I can do for you if you wanted, by connecting to your computer and carrying out the steps on screen, in person.
let me know if thats something you would like to try,