Miguel V Hesperia , CA May 24, 2015 Appliance: Model JADE RJRS 4280C Have a jade refrigirator model rjrs 4280c wich dont exist any more and it was not cooling and also noticed the light would stay on when the fridge side door is closed Very easy with tech advise (Dawn) she help me out... I had already did some troubleshooting on defrost thermostats and thermistors before guessing on what was wrong. I came to the conclusion and Dawn confirmed it and agreed with me, it was main curcuit board wich was almost $300... But it was the problem. You cant go wrong when u can return the part if its not it, other places dont refund your money especially on electronic components.. I hope this information helps resolve someones problem..Im no professional at this but it felt good to fix it after to supposedly 3 techs came by and couldnt figure it out, all they said that it was a very nice fridge. Its easier to fix the problem on mine than replacing the whole unit, its a custom unit with custom cabinetry.. dont give up.. Thanks to Dawn and appliance parts pros! Read More... 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes