Our Electron is powered via a 12V AC transformer through a bridge rectifier and capacitor smoothing.
The battery is plugged in and isn’t needed for general usage.
After a number of weeks we had a failure in the electron and the cause of that appears that C5 has shorted out. The resistance is extremely low. With C5 in, the particle doesn’t boot. When it is out, it appears to work.
What could cause C5 to fail?
This caused the transformer to fail so we do need to know why it failed if possible.