SKR V1.4 Turbo died when 3.3V and 12V shorted

bigtreetech / BIGTREETECH-SKR-V1.3

32bit board with LPC1768, support marlin2.0 and smoothieware, support lcd2004/12864, On-board TMC2130 SPI interface and TMC2208 UART interface no additional wiring is required

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SKR V1.4 Turbo died when 3.3V and 12V shorted #424

Open baymax2161 opened 3 years ago

baymax2161 commented 3 years ago

Hello

I just got the SKR V1.4 Turbo board and was testing it on my 3D printer. I accidentally shorted 3.3V pin to 12V with a screw driver and the LPC1769 seems to have died. Could I just replace the LPC1769 and get it to work again? I have the soldering equipment and experience required to replace that chip. But I'm not sure if it has some sort of bootloader on it that I need to flash first.

I'd really appreciate any sort of help and suggestions. Thank you.

oldman4U commented 3 years ago

Sure that not the fuses are burned?

radek8 commented 3 years ago

After replacing the CPU, you must load the bootloader

https://github.com/ardiehl/BTT_SKR_13_14_14T_SD-DFU-Bootloader https://github.com/bigtreetech/BIGTREETECH-SKR-V1.3/issues/346 https://community.platformio.org/t/skr-1-4-bricked/12932/4