Sometimes they go out and now some diodes are blinking. Have been using them for over 6 months. However, they are very bright compared to incandescent bulbs. Update July 7, 2018 (7 months ownership): Rating changed to 1 star. Tried repeatedly to reinstall the bulb and check the contacts. It wasn't about that. I came to the conclusion that the LEDs are bad. Replaced with Sylvania LEDs which come with a 12 month guarantee and stop flickering as much after 7 months of use. There is a quality issue with these LEDs and they are not worth the trouble.
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