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Jyers / Marlin

Marlin is an optimized firmware for RepRap 3D printers based on the Arduino platform. | Many commercial 3D printers come with Marlin installed. Check with your vendor if you need source code for your specific machine.
http://marlinfw.org
GNU General Public License v3.0
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Buzzing sound wrong firmware ender 3 v2 #1386

Closed Whitewater92 closed 3 years ago

Whitewater92 commented 3 years ago

Just got an ender 3V2 in this week (first 3d printer). Did a firmware upgrade but thought I had latest version of mainboard 4.2.7. I have however a 4.2.2 resulting in faulty upload and buzzing screen and no display. (even with power off it continues buzzing). donwloaded the 1.3.5b version and installed new screen firmware (Gotcha) found in sourcecode.zip (still buzzing after update) Then I tried installing v 1.3.5 o,n the printer. Keeps on buzzing, nothing happens, stopped after 5 minutes of buzz... any ideas?

PapsDizzy commented 3 years ago

rename the firmware for the 4.2.2 board to something else like new.bin, put it on the sd card, only the firmware file you renamed is on the sd card. turn on printer and it should be done in a few seconds.

Whitewater92 commented 3 years ago

thx, Just did that and same story, buzzing and nothing else, nothing on the display neither...

PapsDizzy commented 3 years ago

i hope you did not kill your board with the wrong firmware. but in my opinion it sounds like you grilled your board.

Whitewater92 commented 3 years ago

interesting, I didn't even manage to print something as I wanted to have the firmware update with the level feature to solve my initial problem... Can i check the mainboard in a way to see if it's RIP ?

Whitewater92 commented 3 years ago

the Blue LED on the PCB is still on...

Whitewater92 commented 3 years ago

the LED seems to be on when a USB cable is connected

PapsDizzy commented 3 years ago

unfortunately I can't help you because I don't have the knowledge for that

kted commented 3 years ago

Disconnect the USB cable and try again. The mainboard is beeing back-powered.

Whitewater92 commented 3 years ago

Default 1.3.5.b version. Disconnected USB cable and it updated the mainboard !! Problem solved but very strange cable is not allowed to be connected when upgrading with SD card... anyway, problem solved ! Thx

weav2k4 commented 3 years ago

If USB is connected to the mainboard it never allows the board to power down as USB is supplying juice. Bad design by creality to have USB power go to the board. If it never powers down then it will never see a power cycle to flash. Is why many people will cut the power wire on the usb cable itself to keep it from powering the mainboard. Also needed if using a pi with octoprint as the pi will keep power to the printer mainboard via it's usb connection and it shouldn't. fwiw.

Whitewater92 commented 3 years ago

yep, not very professional. I would at least expect a power saver feature cutting down the power or bringing it to a level not high enough to power up the display.

Jyers commented 3 years ago

Glad you found the solution! Personally I just use a little electrical tape on the power pin of the USB A side 😉