The display on my watch went black. I could still feel the vibrations and was able to check the Galaxy Wearable app on my phone. It got really hot when charging with the watch powered on. I did troubleshooting and after failing all attempts it was recommended I replace the battery. The initial disassembly was difficult but do-able. After disassembling and reassembling 3 times, the watch finally powered on but the display was still black. I let it charge and once it reached full charge the display was working!! Thank you so much for this detailed instructions!! I'm so happy to have my smart watch back!!