Autopsy on a failed product (Patreon)
Published:
2024-07-12 11:10:44
Imported:
2024-07
Content
When I originally made a video about these units I was warned that it might fail, and that's probably why they were selling them off cheaply.
It has failed, and the mode of failure is intriguing. As if the resistive nature of PTC ceramic encourages accumulative surface tracking.
It's worth mentioning that the PTC heaters in glue guns and in heating valve actuators often fail the same way.