कोन एलेवेटर डिस्प्ले BVT102 फिक्स नो डिस्प्ले

Video Description:
Ever faced a KONE elevator display that suddenly goes blank? In this video, we demonstrate how to diagnose and fix the BVT102 display board when it shows no display. You'll see step-by-step troubleshooting for power supply checks, bus communication verification, and practical solutions to restore real-time floor information and fault code visualization.