cook top lights on whirlpool micro hood
A bit of googling indicates that the lights on these units tend to be a common problem. Mine were fine until the other day when we had a power outage. I'm guessing the inrush surge popped the board. Everything else on the unit works fine.
The simple answer is to replace the board...at roughly the cost of a new unit. Kind of steep just to fix my wife's favorite night light.
I was thinking of breaking out the soldering iron and replacing what I figured would be a faulty relay. Now I am looking at the wiring diagram and I see some notation that is new to me.
Anybody done a board level repair on one of these?
The mico controller side of the circuit seems to function fine. The turntable and fan controls function and the unit beeps when I hit the lights button. The wiring diagram shows standard relays for the turntable and the vent, but the lights show up as attached to PH1 and VR2. I can't find any notation on what PH stands for anywhere? The resistor I'm guessing has something to do with the dual brightness modes. Any thoughts?
All of the other components with relays were indicated as R and the lighting circuit had what looked like a relay marked as PH.
I pulled the board and PH apparently equals SSR solid state relay. Specifically a samsung S201DH2. The relay coupled with a Samwha svc 271-14 varistor is apparently what controls the current output to the lighting circuit for the 2 brightness settings.
I couldn't get any continuity through the varistor so I figured it might be dead. When I jumper around it my lights come on bright. Still no on/off function and no dim/bright (which I figured the varistor would be used for anyway).
Still not sure if I have a bad varistor, SSR or bad control input to the SSR. I found a pretty close varistor for around $2 from mouser and ******** has the SSRs for around $4. Guess I'll have to play with it some more-
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