Yes good job, because those boards are, from a quick look, extremely expensive, as in over R8k each. Ice maker of course does need to be cleaned properly, and all the black mould removed from it. Bit of clear lacquer on the triac side of the board and it will work forever, going to guess the fault was the resistor flaming up, from the optocoupler getting dirt on the pins, and flaming up the resistor, and then this arced over the board, driving all the fan current through the gate of the triac. Shorted fan motor normally blows the fuse as the motor blows the winding open, so if somebody just put a new fuse in this would explain the arcing on the holder. Fan motor always benefits from 3 drops of engine oil on each of the bushings, they never come with enough from the factory, and I know from experience those fans both run hot, and also fail unless well lubricated. Take apart, apply oil to the felt, and put back together is easier when new, and the plastic parts are not crumbling, along with the insulation. Good source for those optical couplers is to grab old split AC inside control boards, they normally have 2-3 of them there, and the triac, used to control the relays for the fan and compressor. Also good source of the fuse holders as well, though you might just get the 2 clips, the fuse and a clear plastic sleeve instead, but still works. hopefully somebody actually changed the water filters as well, they never get changed, and likely, if like all I have seen, are either missing, or are a mess of brown and black snot. Supposed to be white, but that vanishes in a week, some are so stuck that a new filter complete is the solution.
Yes good job, because those boards are, from a quick look, extremely expensive, as in over R8k each. Ice maker of course does need to be cleaned properly, and all the black mould removed from it. Bit of clear lacquer on the triac side of the board and it will work forever, going to guess the fault was the resistor flaming up, from the optocoupler getting dirt on the pins, and flaming up the resistor, and then this arced over the board, driving all the fan current through the gate of the triac. Shorted fan motor normally blows the fuse as the motor blows the winding open, so if somebody just put a new fuse in this would explain the arcing on the holder. Fan motor always benefits from 3 drops of engine oil on each of the bushings, they never come with enough from the factory, and I know from experience those fans both run hot, and also fail unless well lubricated. Take apart, apply oil to the felt, and put back together is easier when new, and the plastic parts are not crumbling, along with the insulation.
Good source for those optical couplers is to grab old split AC inside control boards, they normally have 2-3 of them there, and the triac, used to control the relays for the fan and compressor. Also good source of the fuse holders as well, though you might just get the 2 clips, the fuse and a clear plastic sleeve instead, but still works. hopefully somebody actually changed the water filters as well, they never get changed, and likely, if like all I have seen, are either missing, or are a mess of brown and black snot. Supposed to be white, but that vanishes in a week, some are so stuck that a new filter complete is the solution.
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