Electric Blanket Control Board - adding microcontroller sinks too much current

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Joined Dec 4, 2022
This board has a low-power and high-power side. The low-power side is DC, 5V, and powers a microcontroller, an LCD, and some pushbuttons. I'm trying to figure out how to also power an ESP32 dev board off this, but when I add the ESP32 board in the voltage of the +5V VDD drops down to 3V.

I expect I'll have to replace a capacitor or resistor on this board in order to let more current flow through whatever is providing the 5V.

What do you think I have to do in order to have the 5V have enough power to also drive the dev board?


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