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How are you determining that this is the problem? Is the optical going dark? Please explain further what the symptoms are. I am also making a phone chat option available for you if you think that would be helpful here.
Is this in a trailer or motor home? And by "storage switch" are you talking about the disconnect solenoid switch? Most of the time this is from a bad connection that may have gotten some moisture into it from a damp climate. It can be the optical went south and those are usually rebuildable unless it is the optical proper. I just had one done recently. Some places would try to sell you a new fridge. Please get back to me if you need more as all follow ups are included in our fee.