I had got two NI USB-8451 one is working, the other isn't working, using scope,I found that the broken one's SCL electrial level always low, not familiar with SDA Pin, how can I deal with it?
when i opened the product the MCU- SCL pin is also low leval (abnormal),and MCU- SDA pin is high level (normal);
maybe the MCU is broken?
product PN: 192317D-02L, SN: 1B87CE5,
