The HDMI cord is causing electrical discharge.
The HDMI cord is causing electrical discharge.
Hello, I observed a spark when re-plugging my HDMI cable into the monitor after replacing the PC power supply. Initially, I suspected a short in the motherboard due to contact with the case, but found nothing. Then I tested touching the cable to exposed metal parts inside the empty case while the PSU remained active and the cord still sparked. What steps should I take next?
With a multimeter, you can check the voltage difference between the HDMI shielding and the PC case. A small amount of 9 volts is sufficient to cause a spark, while anything higher indicates a potential issue. If you detect more than 60 volts, there’s a clear warning.