Custom nRF9160 Board can load, but does not appear to be running

[Mr.Newlove]

I had been working with a DK and a Circuit Dojo - nRF9160 Feather https://github.com/circuitdojo/nrf9160-feather just to get my basic hardware working. I just had custom boards made for our first pre-production hardware but I cannot get it talking using the serial_lte_modem example at all, using the same hex file, same RX and TX pins on the nRF9160 and ESP32 basically nothing has changed other than trying to transfer things to our own board instead of evaluation boards.

Here is the schematic for the nRF9160 hookup, everything loads fine form the DK to the nRF9160 but doesn't want to respond to anything sent over the serial port. 

https://i.imgur.com/23LeGKg.png

GPS sub-sheet:

LTE-ANT sub-sheet:

Sim sub-sheet: 

I also tried to create a custom board definition but it doesn't want to work either: https://www.dropbox.com/s/o87fcq1u89i85fq/custom_nrf9160.zip?dl=0

I am really at a loss to why this isn't working when it worked on the other boards.

[Mr.Newlove]

Well, after nearly a week of screwing with this, turns out pin 24 didn't get connect correctly... talks to the ESP32 now and can be programmed fine. Having SIM card issues now, I am not entirely sure if its the board or the SIM at this point

[helsing]

Thank you for the update, great to hear you figured it out.

Regarding the SIM-card issue: As this is a new topic, please create a new case and we will help you. You may link to this case if relevant.

What does the issue look like? Have you measured SIM_1V8 to see if the SIM gets powered?

[Mr.Newlove]

All of my problems were because of a bad soldering job, I am suspect of the solder paste I used. This was a hand assembled board for pre-production.