I'm leaving the upper peninsula of Michigan and its day 14 of rain and my ps15 didn't get that wet but ever since the other night they've been blinking in the left tube. It doesn't blink in complete darkness but even the slightest bit of Illumination or light makes it blink and it blinks faster and faster the more light and then turns off. I don't know if this is how the tube dies because I do use these quite a bit but.. any info would be great.