hi everyone , i am working on a side by side samsung sr-s2028. the unit runs normally on refrigeration cycle and everything is perfect, until it enters defristing mode, then it will not re-start and i must turn it off and on again ,until the next defrosting time. i was suggested that the thermal fuse on the fridge campartment was faulty, i measured it found no continuity, so, i replaced the fuse, but the problem is not solved yet. if you can help, please do so. i checked the resistance on the heaters, they seem ok, i was told the board is being replaced.