U3 is a regulator that converts 11V to 5V. It’s a linear regulator, so I’d expect it to get warm. However, if it’s burning hot or the output isn’t 5V, that could indicate a short somewhere on the 5V rail.
U3 is a regulator that converts 11V to 5V. It’s a linear regulator, so I’d expect it to get warm. However, if it’s burning hot or the output isn’t 5V, that could indicate a short somewhere on the 5V rail.