While trying to repair a cheap digital kitchen scale, I came across this component (see picture below). AFAICT, this is 95% identical to the standard Wheatstone bridge interconnect for combining 4 individual load cells with 3 leads each; the red wires directly lead to the scale's controller. However, it has one additional twist: one of the red wires is connected to something below the white resin blob, and then continues to the controller. Unfortunately, even very carefully trying to remove a bit of resin seems to already have destroyed that component, I also removed something looking like Kapton tape with a trace on it. Before, the two leads going in and out of the resin blob measured about 65 Ohms of resistance; afterwards, it's more like 17 kOhm.
I already had sort of given up on the scale, so as a last-ditch attempt, I just bridged the mystery component with a bit of wire, but that didn't help either, the scale doesn't calibrate properly anymore.
But my curiosity has been piqued: can anybody venture a guess what that component is? I was guessing something like a PTC resistor to compensate for environment temperature, but isn't that the reason why these cheap scales self-calibrate on powerup, because you can save the temperature sensor?