Troubleshooting and repairing a broken PIR (Passive Infra-Red) motion sensor sold under the ROBUS brand (RU360-01) and then taking a closer look at the failure mode and discussing the robustness of X class safety capacitors and a teardown of the failed capacitor and speculation about the root cause of the failure. https://www.youtube.com/channel/UCr-cm90DwFJC0W3f9jBs5jA video discussing film capacitor failure modes with Ron Demcko (KYOCERA AVX) https://www.youtube.com/watch?v=9V99J22aiLE caps.wiki article with high resolution images and repair guide https://caps.wiki/wiki/ROBUS_PROTON_UNIVERSAL_360_PIR JIMSON GMF series capacitor datasheet https://datasheet.lcsc.com/lcsc/1912111437_Jimson-MKP474K275A33_C434164.pdf Vishay 339 X2 series capacitor datasheet https://www.vishay.com/docs/28138/mkp339x2.pdf 00:00 - Looking at the failed PIR sensor 03:15 - Verifying fault condition 04:52 - Testing capacitors 07:19 - Replacing capacitors 09:22 - Verifying repair 10:08 - Capacitor Impulse withstanding tests 13:34 - Failed capacitor teardown 16:14 - Outro Corrections: 15:54 - Typo, "GMX" should be "GMF" ROBUS RU360 PIR Lighting Sensor 360 Degree Detection Boxed UPC: 5391370039505, MPN: RU360-01, Brand: ROBUS REF: WT-YT-V-21