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Rasperry pi help
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Rasperry pi help

by ridanleffell on Sun Jan 12, 2020 10:56 pm

Hello all,

We have purchased 5 raspberry pis for our engineering program at our school.
Four of them seem to have stopped working.
After checking the sticky post I have found that all those PIs don't show 3v3 when tested.
It says they are not user repairable (In the sticky post).
So how do I fix them? or where do I send them to be fixed?

Thanks,

ridan

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Re: Rasperry pi help

by adafruit_support_carter on Mon Jan 13, 2020 6:35 pm

Where the Pi's used by students? In particular, did anything touch the GPIO headers? Those pins expose very sensitive parts of the Pi. We try to cover that aspect here:
https://learn.adafruit.com/raspberry-pi ... g/overview

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Re: Rasperry pi help

by ridanleffell on Mon Jan 13, 2020 10:48 pm

adafruit_support_carter wrote:Where the Pi's used by students? In particular, did anything touch the GPIO headers? Those pins expose very sensitive parts of the Pi. We try to cover that aspect here:
https://learn.adafruit.com/raspberry-pi ... g/overview


Thanks for the reply.
Two of them were used by students, and two didn't. We explained the importance of caution with the GPIOs.

Is there a way to fix the pi?

Thanks

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Re: Rasperry pi help

by adafruit_support_carter on Tue Jan 14, 2020 2:40 pm

Unfortunately, not easily. And the cost would be more than just a replacement board. Damaging the voltage regulator via accidental shorting of the GPIO pins is a common issue.

If you are having issues with one of the un-used boards, that is something we can replace. But for the others, once anything touches the GPIO headers, it is essentially a warranty voiding event.

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Re: Rasperry pi help

by ridanleffell on Tue Jan 14, 2020 2:48 pm

adafruit_support_carter wrote:Unfortunately, not easily. And the cost would be more than just a replacement board. Damaging the voltage regulator via accidental shorting of the GPIO pins is a common issue.

If you are having issues with one of the un-used boards, that is something we can replace. But for the others, once anything touches the GPIO headers, it is essentially a warranty voiding event.


Thanks.

So how can we fix the two unused boards?

ridanleffell
 
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Re: Rasperry pi help

by adafruit_support_carter on Tue Jan 14, 2020 2:52 pm

Let's troubleshoot those a little further.

First, just to be clear, nothing has been attached to the GPIO headers on these boards? They are essentially straight from the box.

And the current condition is that you are not seeing 3.3V on the GPIO header when the board is powered? If so, how are you making that measurement.

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Re: Rasperry pi help

by ridanleffell on Tue Jan 14, 2020 2:59 pm

Yes.
Out of the box.
I check with DMM the voltage between the 3v3 pin and the housing of the HDMI port, as explained in the sticky post.

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Re: Rasperry pi help

by adafruit_support_carter on Tue Jan 14, 2020 3:45 pm

As a sanity check for the DMM measurement, try measuring the voltage on one of the 5V pins. Here's another good reference for the pinouts:
https://pinout.xyz/#

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