I had some Technicolor pixels fail this year mainly after rain. A couple had a faint blue all the time but after being unplugged for a few days acted normal today. I am concluding that the issue was clearly water intrusion. They seem very watertight from the back which leads me to believe like others that the entry point is around the LED. I had the C9 covers on so I thought I would of been OK. Ray has been kind enough to replace the bad sets. The new batch is supposed to have the water intrusion issues resolved but just in case I was thinking of adding a layer of Teflon tape to the threads - any thoughts?