Upgraded board and touch screen, now printer doesn’t work
On my 3 Pro, I inadvertently shorted pins in the original knob screen, big flash and nothing thereafter.
Power supply tested good with proper voltages and quality.
I replaced the motherboard with 4.2.7 and the compatible touch screen. Then downloaded the firmware to the SD card, on both 8 bit and 32 bit micros.
At power up, the screen shows the Creality logo but won’t go further, leaving a live screen but will accept no input commands.
I have verified my board wire connections are correct.
Connecting my computer to the USB port does light the screen.
At this point I don’t know how to troubleshoot further. Has anyone else had this problem? How was it resolved?