Hi all , some advice here please , last night I set up my mount EQ6 r pro , plugged it into my celestron lithium power tank as I always do and on switching the on button on the mount something went pop inside the mount and a burning smell followed , then all I got was a red flashing power light and nothing else , obviously well not obviously but I think there was a power surge and it fried the motherboard , I’ve already ordered a new motherboard but what steps could I take to make sure this doesn’t happen again , surely the fuse in the power supply (12v car lighter socket type) should have blown before frying the motherboard , or should I use a lower rated fuse .. or something else .. ? I’ll be worried I’m going to fry it every time I turn it on now .. any help appreciated , thanks 🙏