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Participant bhig
Participant
185 Views
Registered: ‎09-01-2017

ZCU106 short

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Hello,

I have a ZCU106 that someone accidentally touched a metal plate to the bottom of the board near where the exposed PCIe plug is.  They said heard a pop and now the board does not fully boot.  Things we’ve verified are:

1. All of the LEDs for PS power rail and PL power rail light up green.

2. UART still works, all 4 COM ports show up to the PC

3. Ethernet seems like the phy at least works because the lights come on and the PC detects the cable is plugged in.

4. The PS still runs, at reset we see the FSBL print out it’s first 2 lines.

5. However, then booting halts, the INIT_B light is red and the PS error stat LEDs have 1 off and 1 lit up red.

The boot.bin is programmed into QSPI and then we were booting the Linux image using tftp from uboot, however now we never get out of the fsbl since it seems the fpga is not programming.

 

Anyone have an idea of where to start looking for damaged components other than just starting on one corner and checking each one, or does it sound like our board is dead and we need a new one?

 

Thanks

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1 Solution

Accepted Solutions
Moderator
Moderator
145 Views
Registered: ‎10-19-2011

Re: ZCU106 short

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I would not trust the board to do anything critical or heavy lifting. Im not sure what your situation is though. 

As far as debug goes, start with the power supplies and measure the voltages out of them. Run the BIST to see if anything fails.

Does the board come up in Vivado HW manager? Are you able to run any other designs on the board? That could help narrow down your problem areas. 

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2 Replies
Moderator
Moderator
146 Views
Registered: ‎10-19-2011

Re: ZCU106 short

Jump to solution

I would not trust the board to do anything critical or heavy lifting. Im not sure what your situation is though. 

As far as debug goes, start with the power supplies and measure the voltages out of them. Run the BIST to see if anything fails.

Does the board come up in Vivado HW manager? Are you able to run any other designs on the board? That could help narrow down your problem areas. 

-------------------------------------------------------------------------
Don’t forget to reply, kudo, and accept as solution.
-------------------------------------------------------------------------
Participant bhig
Participant
141 Views
Registered: ‎09-01-2017

Re: ZCU106 short

Jump to solution
Thanks for the suggestions, the board is just for informal development so nothing critical. I'll try your suggestions and update the thread if we ever end up repairing it.
Thanks!
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