Just want to give DJI out of Carson California a big Thumbs up. Several months back I bought a used Lightbridge from someone on RC Groups that was suppose to be in good working order. Well guess what, it did not work at all. This is the chance you take when you buy something used. So I called DJI in Carson Cailf, they said no problem send it to us and will take care of it. They sent me a RMS for shipping. Had the unit for about a week and a half, sent it back fixed and ready to go, just like new. Reinstalled on my S900 and have been flying trouble free.  Free shipping both ways. Had to pay a small repair fee due to the fact that I had bought it used and I had no paper work/receipt. I feel that it was very fair and reasonable. The folks out of DJI Carson Calif were very professional and friendly, service was fast and excellent.

I'm glad to hear that you're good to go with your Lightbridge. The positive feedback is greatly appreciated.