Mayur7242
Posts: 2
Joined: Mon Aug 17, 2020 4:18 am

Pi 3b+ Is not working.

Mon Jun 14, 2021 3:59 pm

Hello ,

I have Pi 3b+. Bymistake I short 5V and Ground GPIO. It short onlt few mictro second and pi goes off. I am trying to boot up but it did not start. Only power led on. Green led (ACT) is not on. I tried 5-6 sd cards but not get solution.

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davidcoton
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Joined: Mon Sep 01, 2014 2:37 pm
Location: Cambridge, UK

Re: Pi 3b+ Is not working.

Mon Jun 14, 2021 4:07 pm

Disconnect the Pi. Wait 48hrs. Try again.

The Pi3B+ has a polyfuse on board to protect it, but it takes some time to recover after being triggered.
No guarantee, but a good chance of a full recovery.
Location: 345th cell on the right of the 210th row of L2 cache

klricks
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Location: Grants Pass, OR, USA
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Re: Pi 3b+ Is not working.

Mon Jun 14, 2021 4:53 pm

davidcoton wrote:
Mon Jun 14, 2021 4:07 pm
Disconnect the Pi. Wait 48hrs. Try again.

The Pi3B+ has a polyfuse on board to protect it, but it takes some time to recover after being triggered.
No guarantee, but a good chance of a full recovery.
The OP said the Power LED is working so the fuse is not blown.
In my experience once the fault condition is removed, a polyfuse will reset itself to a usable state within minutes. Certainly overnight should be plenty of time.......
Unless specified otherwise my response is based on the latest and fully updated RPiOS Buster w/ Desktop OS.

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davidcoton
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Location: Cambridge, UK

Re: Pi 3b+ Is not working.

Mon Jun 14, 2021 5:39 pm

klricks wrote:
Mon Jun 14, 2021 4:53 pm
The OP said the Power LED is working so the fuse is not blown.
Good point.

Is the Pi getting unusually hot? Or staying cold?
Location: 345th cell on the right of the 210th row of L2 cache

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rpdom
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Joined: Sun May 06, 2012 5:17 am
Location: Chelmsford, Essex, UK

Re: Pi 3b+ Is not working.

Mon Jun 14, 2021 6:22 pm

If you have access to a voltemeter, check the voltage on the 3V3 pin of the GPIO header (pin 1). Use the outside of a USB or network socket for the other connection.
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