Hi all, I have the 910 unit installed in a 1994 Subaru SVX. The car has been sitting for nine months and finally when I went to jump start it, the unit raises the antenna and the button lights come on briefly then go out. And that's it. The antenna stays up. This unit has probably about 20 hours of use time on it max. I tried searching but couldn't find anything. Where do I start?

No one has any ideas? It appears to not read from the SD slot. It is hopeless?