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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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Board died #153

Open andrebianchessi opened 4 years ago

andrebianchessi commented 4 years ago

I was configuring my printer and everything was going well. The hotend was heating up and the motors were moving correctly. All thermal protections were enabled on the configuration.h.

At one point, I increased the temperature at the hotend and, while the temperature was rising, set the motors to "auto-home". As soon as I clicked to auto-home, the board "died". LCD, lights at print head, fans, stepper motors and everything else turned off. Now the board is unresponsive, and not even the red light turns on, even after I disconnected everything from the board and power it via USB (with the jumper in correct position). Also, the board won't install a new firmware if I transfer it to the SD card directly.

The last thing I noticed is that the processor and the AMS1117 (both marked in red on the picture I attached) get very hot when the board is connected using USB.

I am pretty sure the board is dead for good, but I wanted to know what might have cause this so that I can stop it from happening again.

IMG_20191125_172403__01__01 .

yfaykya commented 4 years ago

I am on board number 4 at moment. All died randomly :-(

ellensp commented 4 years ago

Sounds like 3.3v regulator is dead and sent 5v to the 3.3v cpu... very sad. time for SKR 1.4. These 32 bit boards are more sensitive to static damage than slower 8 bit boards...

tyty81601 commented 4 years ago

Are you even reading what i am saying? I will be posting your replies online and let thousands of people know how you respond too your customers. I asked “Hello i just seen that you guys have released a new motherboard and i was wondering if you could send me a stl or a step file of the new motherboard im having issues with github and i cannot download the file it downloads the step file as a text file and not a 3d model” i want a 3d file of the motherboard and your answering my question with something that’s totally off topic of what i asked

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On Friday, December 13, 2019, 2:50 AM, ellensp notifications@github.com wrote:

Sounds like 3.3v regulator is dead and sent 5v to the 3.3v cpu... very sad. time for SKR 1.4. These 32 bit boards are more sensitive to static damage than slower 8 bit boards...

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Pixel-Soup commented 4 years ago

Plugging in a driver board incorrectly is the easiest way to kill the LPC chip. My board died as well. The MCU is drawing a huge current. Don't know if any other components are damaged, but I will find out when I replace the LPC1768.

Pixel-Soup commented 4 years ago

Replacing the lpc1768 fixed all problems on my board.

V3N0MX92 commented 4 years ago

Replacing the lpc1768 fixed all problems on my board.

Did you have to upload the bootloader to the new LPC1768 ? If yes how did you do it. Thanks in advance!

PS: My board has exactly the same problem described by @andrebianchessi . AMS1117 is defective and LPC gets really hot together with the voltage regulator. I thought of replacing them. Any ideas would help.

Pixel-Soup commented 4 years ago

The ams1117 is probably not defective. The 1768 is drawing lots of current and causing it to heat up. The 1768 is somewhat difficult to replace without the right equipment. I loaded the bootloader using a J-link on the ICP port. The ST-link is a $5.00 alternative. There are Chinese clones of the j-link, but they might not work except with old software.