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Whirlpool WBM46 faulty module

A whirlpool repairman said that the module of my WBM46 refrigerator needs replacement because it has a problem. What happened was that the ref would keep turning on and off when we open its door/s. later on it does the same thing even if the doors are closed.

What i would like to know is this: is it possible for a electronic technician to fix the module or should i just buy a replacement...the thing is it's too expensive to buy a replacement. I have a little background in electronics myself but i don't trust myself touching it for fear of making the problem worse...but if anyone had had the same problem before and if the problem is as simple as testing which capacitor, resistor or diode is whacked and needs replacing...again, if it is as simple as that, then i could do it myself...just tell me what to do...

Please help...

Thank you very much!

ian

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I know this is an old thread, but just in case people, like myself, are still looking
It is a 450V 2uF Capacitor that causes the issue. It is used as part of a divider circuit and as it fails, it creates a situation where the board can not supply the correct power so when the compressor, fan and light run together the fridge literally turns on and off repeatedly. The capacitor is on the Potency Module. This fails over time, the capacitor dries out, and that causes the issue.
This fridge model, including all variants of WBM35 and WBM46 (that I know of) has a Magnetic door switch for the interior lighting and fan control, so there is no lever or anything to hold in or tape in.
The Potency Module is easy to replace as a complete unit, it is on the lower left side of the rear of the fridge. There is 1 screw to remove (hex head) to release the metal cover and two screws that hold the potency module in place.
The cabling is keyed so will only go back on the one way. Cables are firmly connected, but just pull out. Be careful not to damage the ribbon cable when you unplug it (this goes to the interface board which is at the front of the fridge, with the two buttons and lights).
The Potency module as a complete part is available still (as of me writing this) but varies from $180 to $400 depending where you source it from. It's fairly easy to remove and replace if you have a little knowledge. If you get a tradie in to fix it, then it will not be worth it on the smaller models such as WBM35's as a new fridge would be cheaper.

Posted on Jun 04, 2017

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