"Non-serviceable" LED fridge light module. (with schematic)

This module was sent to me by a chap called Mike because it had failed in his new Beko fridge. It's interesting because it is possibly designed to be cheaper to use than a conventional lamp holder and LED lamp, while also ensuring maximum profit if a replacement is needed out of warranty. (£20 plus shipping at the point of making this video.)
So here's how it works, how to test the LEDs and decide if perhaps one needs bridged to get it working again.
Keep in mind that the fridge must be unplugged from the wall before attempting to install or remove this panel, as it operates at mains voltage.

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