thingy:53 I have damage to the sw2 pin and I am unable to enter the DFU

[neuberfran]

Hi,

I have thingy:53 and I have damage to the sw2 pin and I am unable to enter the DFU. I lost two tiny pieces that go just above the one in the photo and not even using a needle, it seems to me that the button (which was not working before) now doesn't work anymore

My question is: What would be another way in the circuit to put sw2 under pressure (while I throw sw1 to ON) other than pressing this "button"

I stay trying this: https://academy.nordicsemi.com/flash-instructions-for-the-thingy53/  (USB-C Mode)

Note01: I still have the two tiny pieces that came off the top of the sw2, but I don't know how to solder them back and I don't even know if that would solve the problem.

[Asbjørn]

Hello,

I'm not sure what's happened to your switch, but if it doesn't work anymore either you would have to short it in another way or removed it and solder on a new one. If you have a soldering iron, I think at this point it's better to removed the damage button and you can short the connections underneath the button with some small piece of conducting metal.

Best regards

Asbjørn

[neuberfran]

I need you to detail me (with pictures of the links) this region of the board (sw2 button) so I know what other smd button I can put in place or what tiny regions I should solder tiny wires to be able to short circuit

[Asbjørn]

The layout, schematic and BOM for the Thingy53 can be found here: https://nsscprodmedia.blob.core.windows.net/prod/software-and-other-downloads/dev-kits/thingy-53/hardware-files/thingy53---hardware-files-1_1_0.zip

This link is found under the "Download" tab on the thingy53 product page here: https://www.nordicsemi.com/Products/Development-hardware/Nordic-Thingy-53/Downloads?lang=en#infotabs

Best regards

Asbjørn

[neuberfran]

I soldered a button on the 4 wires (as pictured)

I have all the indexes on the continuity scale (beep) on the multimeter. OK.

I follow the steps: 1) I press the sw2 button, 2) with the sw2 pressed I change the switch from Off to On, 3) Always with the nrf connect desktop open, but I never see the Bootloader_thingy53. I've tested it on 2 different computers and with different USB-c cables, too