Sierra Electronics is beyond great. They saved me at least $125.00 and maybe up to $ 600.00 I called this morning expecting them to tell me that my radio was junk or that it needed extensive repairs. I was completely floored when Dianna told me to check a fused Labeled "Backup Fuse" and dam it had blown. I changed the fuse and it solved the problem. I will be using them as a primary source.