Went on this call today. I have the Fast Track Manual and, using it, found the control would go into diagnostic mode but was unresponsive to any test procedures while in diagnostic mode. Seems like a bad board.
Then I went around back to do some tests on the muthaboard. The sensor voltage drops all checked good, all fan voltages were good (though I couldn't hear the evap fan running). But read open through the FF evap defrost heater circuit, so either a bad bimetal or heater.
I'm hoping some of our Samsung experts here (paging Brother Ohm) can help me out with a few questions:
- How diagnostically conclusive is it that the Main PCB is bad if it won't perform any tests in self test mode? BTW, this PCB (DA41-00651K) is NLA, only rebuilds are available to authorized servicers. And this unit is only 2 1/2 yrs old!
- I didn't tear apart the FF compt to see if the evap fan was blocked by frost (probably was-- could see frost in the vents) and whether it was the bimetal or the heater that was open. I don't have the service manual showing tear down for this unit. Anyone have access to the service manual showing tear down?
Given the Main PCB is NLA, what's the likelihood that just replacing the bad components in the FF compt would fix the problem? IOW, is the Main PCB going to continue to cause problems or is it even a problem as it is?
Thanks for any pearls of wisdom!