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Dimple

ZedBoard not turning ON

Question

Hello,

My Zedboard suddenly doesn't turn ON at all. 

It was working all well. A couple days ago,  when I simply connected it to the power supply (not even to the laptop), the Power LED LD13 did not glow. 

The board is no longer being detected. I also checked the fuse F5, and it looks fine. What could have possibly gone wrong? Could you please help me troubleshoot? Or would it be possible to ship the board to Digilent for a check and repair? The board has been purchased less than a year ago.

Thanks,

Dimple

 

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Hi @Dimple,

Sorry to hear that your boards is having issues.   

We can help trouble shoot where the issue is . Unfortunately we do not do repairs anymore. If we establish that going through the RMA process is appropriate we will need to know exactly when you purchased the Zedboard.

Have you verified that the external power supply is working?

Is there any part of the Zedboard the is pretty hot to the touch with it just powered on?

Please measure the voltage of the following Capacitors with a DMM while the Zedboard is powered:

either C328, C329 or C330  ( should be 5V)

either C334 or C335 ( should be 3.3V)

either C351 or C352 ( should be 1.5V)

either C365 or C366 ( should be 1.8V)

 either C356 or C357 ( should be 1V)

best regards,

Jon

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Hi @jpeyron,

Thanks for your response. 

I measured the voltages across the capacitors that you mentioned. C334/C335 show 0V.  There is a short across the caps.

The other caps show expected voltages. 

So is it the regulator that has gone bad?

Thanks, 

Dimple

 

 

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