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Power fails on AES-ZU3EGES-1-SK-G  boards

100jwilly

After running I/O carrier board and module for about 4 hours the power to the boards failed.

This has occurred on another board set we using for development. Jumpers on IO carrier boards are in the correct positions and JP1 on SOC module is removed.

Led D10 VIN-HDR is on and led D9 PG-MODULE is off.

Tried cycling the power off and on but will not power up.

Has this been observed on other UltraZed boards? Any way to get this working?

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  • 0
    The same issue with the board.
    The issue with the net "PWR_DISABLE"; it has about 0.5V. Also, it is not enough to enable the IRPS5401 ICs.
    (see the schematic AES-ZU3EGES-1-SOM-G-schematics.pdf)
    We've tried to apply 3V3_PRI (from the baseboard) via 500R resistor to the PWR_DISABLE net (JP1.1) and this rework helped to start the board.
    Please, review mentioned rework. 
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  • 0
    The same issue with the board.
    The issue with the net "PWR_DISABLE"; it has about 0.5V. Also, it is not enough to enable the IRPS5401 ICs.
    (see the schematic AES-ZU3EGES-1-SOM-G-schematics.pdf)
    We've tried to apply 3V3_PRI (from the baseboard) via 500R resistor to the PWR_DISABLE net (JP1.1) and this rework helped to start the board.
    Please, review mentioned rework. 
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