Skr.816 — Schematic Diagram Extra Quality

Ensure your panel resolution (1366x768 vs 1920x1080) matches the board's firmware configuration.

The schematic shows that the DIAG pin of the driver connects to the MCU's endstop pins via a diode (D1, D2, D3). If you are using "816" as a search term for troubleshooting, you may find that the pin is shorted to ground incorrectly. The schematic reveals the exact diode orientation (cathode towards MCU). skr.816 schematic diagram

This section covers the user-facing components. If the HDMI port stops working, the schematic shows the ESD protection diodes and the coupling capacitors on the HDMI data lines. If these components short out, they can kill the video output, even if the rest of the board is fine. Ensure your panel resolution (1366x768 vs 1920x1080) matches