My boron was installed for a long time and was updating thingspeak every 15 minutes for years. I believe I lost power and it ran on battery for a while but never recovered. I was finally able to physically access it to see what was troubling it. I connected USB directly and removed the lipo. The main led is not on and the charging light just flashes. I could not see it in the cloud. I then ran the device restore over usb. Even though the led was out it appeared. I successfully did the restore according to the PC but again the LED never illuminated. Now I cant even see it when plugged into USB.
Are there any tricks to revive this or is it kaput? I do not believe it had any power supply issues other than it ran on battery for a while. It was in a waterproof box and looks new.