Some versions support switching resolutions via remote sequences. Try Input + 03771 or Input + 03772 for 1366x768.
until the blinking stops or the TV reboots automatically. Do not remove power during this process. VS.TP53U73.2 Resolution Code | Logo Setting Download TP53U73 1366x768 USB rar
The is a popular universal combo motherboard for 32-inch LED/LCD TVs. Finding the exact firmware for a 1366x768 resolution is critical for proper display functionality. π₯ Firmware Download Resources Download TP53U73 1366x768 USB rar
If the picture is upside down after flashing, find the Mirror setting in the Service Menu under "Panel Settings". Download TP53U73 1366x768 USB rar
Technical communities like LCDSoftware often archive these universal board files.