[EricVanWyk]

The FETs controlling the blown breakers would become marginal. They are rated at 25V, so you are right up against their rating. It would become possible for a voltage spike to push you well past their rating and blow them.

The PTC fuse for the regulated 12V supply would be well out of spec and no longer provide protection.

The 12V power supply indicator LED may burn out.

Most of the input capacitors for the power supplies would be over-volted. This would likely cause part failure (which would become self-clearing, loudly and with odor). It would definitely cause severely increased noise on the output.

The 12V regulated power supply would not be in regulation.

Depending on what year PD you are using, the 5V supply might pop.


The quick summary is that the PD design could easily be tweaked for a 24V input, with most rework for the 12V supply, but it wasn't.