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To prevent the voltage fluctuations we recommend to replace the motherboard with never version that has different capacitor(H-1029-A) or add a specially crafted cable with the capacitor (PCG-1765), guide how to add it in INCH Duo can be found here /wiki/spaces/EKC/pages/3650846721 .Here you can access a guide for replacing the motherboard in INCH DUO: /wiki/spaces/EKC/pages/3635019901
Replacement process:
Hold the SOM with fingers and carefully lift it (SOM is connected to the motherboard with two multi pin connectors and two PCB spacers – marked in red)
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