The is a popular "three-in-one" universal LED TV motherboard used in various 32-inch television brands like KMC, Feltron, and Conic. Because it is a universal board, the USB software download is often required to configure the firmware for specific panel resolutions, such as 1366x768 or 1920x1080 . Understanding TP.RD8503.PB816 Firmware
Once the LED stops blinking or remains solid, remove the USB drive and restart the TV. Service Menu Access tprd8503pb816 usb software download top