Kitchen Aid Built in Fan Motor replaced then Burnt out Chip D10 and flashing lights chirping sounds

General
1

My refrigerator is failing to power on and is making a repetitive, rapid clicking sound coming from the control board area at the top of the unit. Prior to this, the internal cooling fan failed and was replaced. The unit ran overnight and stabilized temperatures, but the “High Temp” light was flashing. I turned the unit off to attempt a reset, and it has not powered back on since; it only clicks.

Diagnostic Findings:

  • Main Control Board: I have inspected the boards at the top of the unit. On the Power/Relay Board (marked GREC-010 / 2321728C), there is visible heat damage/burn marks on chip D10, located between a capacitor and the transformer (XTVE 16-01).

  • Compressor: The compressor (Embraco VEGZ 7H) was cooling and making ice successfully until the manual shut-off, suggesting the compressor and inverter are likely healthy.

  • Clicking: The clicking is specifically coming from the relays on the power board during the boot-up attempt.

2

What is the model number of the appliance? This can help with identifying what specific circuit this may be involving.

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Kitchen Aid KSSC42QVS02

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It sounds like the diode at D10 may have failed and allowed back feed through the capacitor at C32 on the control. This can certainly cause a hot spot and failure where the relays do not receive the necessary voltage to open properly. From what I can see, it looks like the manufacturer discontinued the original control due to issues with the control. They have a control kit that is used instead. This link can be used to view the part information for the kit. W10789107 Control Board | Genuine Whirlpool OEM In Stock