Start with the vendor whose logo is on the boot screen.
If you want, I can:
Here is an essay exploring the significance of this specific hardware-software relationship. tpmt5510ipb801 software download new
Bridges the communication between the IC and your operating system.
Finding and installing new software for your TP.MT5510I.PB801 board is a common troubleshooting procedure widely discussed in repair communities. While finding the correct firmware can be a challenge, following this guide and using the resources mentioned gives you the best chance of reviving your TV. Start with the vendor whose logo is on the boot screen
Since this is a universal board used by many different brands, you must ensure the resolution of the software matches your TV panel.
Fixes software-related black screen issues where backlight is present but there is no picture. Finding and installing new software for your TP
If the TV is completely dead (no standby light), you will need to unsolder the SPI Flash chip (usually 25Q32 or 25Q64) and program it using a tool like a CH341A programmer.