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Whirlpool 24 in. GU1200XT Built-in Dishwasher - Page 5 Questions & Answers
My whirlpool dw stopped in mid cycle. no lights come on. checked power. water in the bottom
A lot of dishwashers that fail completely (no power at all but with water in the bottom) fail because of a blown up power switcher chip on and/or smoothing resistor on the power supply section of the main controller board. Usually these components blow as the heater kicks in to heat the water as this is the point of highest current draw. I would unplug the machine and locate the main controller board, disconnect all the cables from it and open it up (take care to wear gloves and not touch any capacitors or sensitive components) inspect the board for blown chips, and burned cracked resistors, or domed/bulging capacitors as these three are the main culprits. If the switcher chip has gone, it is usually starts with LNK___ or TNY___ and the main resistors are usually around 100ohm 3watt 5% tolerance (brown black brown gold) some have a 5th whitish/yellow band on one end that denotes it has a safety fuse built in.... But this isn't something I would consider vital. You can always add a fuse in series with the resistor if you REALLY want to!
I have added photos of a common controller board's big resistor and switcher chip (both after being replaced) for reference to what I was explaining above. This switcher was a TNY264GN that had cracked and blown up along with the resistor.
12/23/2020 1:11:22 PM •
on Dec 23, 2020
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