Daughter has an Electrolux (Frigidaire) FFTR1821QS0 fridge. It's leaking water from the back end of the refrigerator control assembly onto the top shelf of the fridge. I'm diagnosing the problem as a frozen or clogged defrost drain up underneath that plastic housing. Question is: Is there anything spooky about removing that cover? Is there a service manual available for that box I can get my hands on?

Thanks for your advise.