Dave, You're absolutely correct. Project moving forward! I hope this helps other people also.

Solved! Thanks to Dave’s analysis and guidance the issue of a blank OLED screen seems to be solved. Remember, the issue was V3.1 seemed to work fine...

@davee Thank you! Don't know why I couldn't find the v3.2 schemo earlier. After reviewing both v3.1 and v3.2 schemos I cannot see a difference wi...

Oops. The two new boards that DON't work have V3.2 printed below the U.FL connector. The original boards that work have V3.1 printed below the U.FL ...