The lifetime of flexible neon is 40,000 hours or 4 years of light. We can say that with normal use the neon can last 6 to 10 years. To optimise the lifespan of the LED’s. When running the sign round the clock. We recommend connecting the neon through a basic mechanical outlet timer to run a daily on/off cycle. Switching the neon off for a 24-hour period every 2 weeks ensures the specified lifetime.Â Over time LED’s will fade to a gentle light until they no longer light up. When the LEDs stop working is the sign is done? How long will my LED neon sign last? Your sign has a general life expectancy of 80 000 hrs. Three times more than traditional gas neon.