The screen displays "No Signal" even when devices are connected. You are a technician performing a mainboard replacement. Installation Steps (General Guide)
Download the VST26 12C 11331 Boda STYLANCE LED2303.rar and extract the .bin file inside.
Once the blinking stops or the TV reboots, remove the USB drive. Important Safety Warning
If your is stuck on the standby light, showing a blank screen, or experiencing software glitches, you likely need to re-flash the system firmware. The VST26.12C 11331 is the specific motherboard/mainboard software required to bring this 23-inch Full HD display back to life.