I wouldn’t be too sure it’s just a fuse. But of course it’s the place to start troubleshooting. In addition to the fuse you’ll eventually find in a fuse panel there might well be one inline behind the radio. This is because Thor uses a commercially available radio and they invariably have them as the manufacturer doesn’t know where it will be installed and needs to protect the radio. If you have to pull the head unit anyway you might consider replacing it with a better one. I just put a mid level Kenwood and an upgraded amp in my coach and it’s a significant improvement. The original Xite had failed and despite having GPS I never liked it.
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