Downrigger Issue

[bone8]

So i have a cannon magnum 5 down rigger giving me some issues with not working i have checked my power and i have switched it to the other side of my boat and it still has this problem i am curious if any of you have any idea what it might be it will just stop working out of the blue on random days some days not an issue other days it works one minute then not the next its only about 5 years old i have another one just like it and no troubles at all its been doing these for a few years now