I bought a used I charger 406 Duo a couple months ago and it worked fine up untill this last weekend. Wouldnt notice the battery when connected but the balance part read fine. Looks like it has power to the side having issues as well when I checked it. Got the error code 1305 about checking connection. Looking online it looks like possible a fuse blew on it? Wondering if anybody has had any experience with this and how they fixed it?

Thanks,