LEDs flashing – not sure why? Tagged: Flashing, LEDs This topic contains 1 reply, has 2 voices, and was last updated by Joe L 1 year, 2 months ago. Author Posts October 20, 2016 at 4:58 pm #7814 Stan MarshallParticipant Hi, I have hooked up a few simple LEDs and they have been flashing. They are not supposed to be flashing, so does anyone have any ideas why this would be occurring?? thank you… October 20, 2016 at 5:14 pm #7815 Joe LGalco Representative Hey Stan, Improperly flashing LEDs are often due to thermal issues. Maybe see if you can try connecting the LEDs to a different device and/or in a different environment and see if that makes any difference. Hope this helps! Author Posts You must be logged in to reply to this topic.