Cm4+94v0+boardview

When the CM4 is not booting, the boardview is used to perform "cold" tests (multimeter) and "hot" tests (measuring voltage under power). Scenario 1: Dead Board (No Power LED)

: Allows you to click on any pad (e.g., a USB D+ line) and see every other point on the board it connects to, essential for tracing broken paths or short circuits. cm4+94v0+boardview

With the Boardview open, set your multimeter to continuity. Place one probe on the CM4 connector pin (identified in the Boardview) and the other on the HDMI pin. If there is no beep, the Boardview confirms the trace is broken, likely due to a cracked PCB or a dislodged via. When the CM4 is not booting, the boardview