Have you tested the board multiple times before it is used in the field? If yes, what is your observation?
What is the environment where the board is used? What is the end application?
Howmany boards behave like this. Out of howmany? Is it a custom board?
Thank you for your reply.
Boards are tested once or twice before it goes to the field. We shipped boards to customer and receive 10 to 20 pcs under an RMA for the same issue. This time we received few boards which were fixed recently so need to identify the cause.
I am not aware about end user application.
it is a custom board which has MCU CY7C64215 to drive multiple LED driver chips. And also it talks to other devices like computer using USB.
Please let me know if you need more inputs.