Problem with Custom PCB | Cypress Semiconductor
Problem with Custom PCB
I crated a custom PCB to house CY8C4247LQI-BL483 chip with some custom components. The design around the chip is based on its datasheet (http://www.cypress.com/file/137466/download). The first board works without any problem. I can program it and see its advertising packets. However, on the second board, I can program it without any problem using the same program as in the first board but I cannot receive any advertising packets.
The problem may occur during soldering process. I used solder paste and heat gun method. Visual inspection sees no solder bridge or anything usual.
Is there any poor man's solution to check what went wrong? I do not have any expensive equipment to check other than a cheap digital volt meter and an old 15MHz oscilloscope. Is there a guideline to troubleshoot in this situation?
Thanks so much in advance. I really appreciate for your help.