MacFizz
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How does a RPi dies

Tue Nov 15, 2016 10:30 pm

Hello there
It seems my good old RPi B has died.
I didn't know it was even possible without doing anything too exotic.
I was running openelec on it.
Now, when I plug the power, the power led goes on, the ACT (green) is very, very dimly lit and nothing else.
I changed the power supply, cable, SD card with new img freshly loaded (tried openelec, raspian and osmc) and nothing.

Any clues ?
thx

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rpdom
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Re: How does a RPi dies

Tue Nov 15, 2016 11:27 pm

Dim green LED on the old Pi B means that it has failed to read anything from the SD card.

Check the connections in the SD card socket. Sometimes they have problems making contact.

MacFizz
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Re: How does a RPi dies

Wed Nov 16, 2016 8:34 am

Yes, that's what I'm thinking, but I cleaned the contacts, tried different SD cards.
Would there be any possibilities to boot of an usb card reader ?

thx

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RaTTuS
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Re: How does a RPi dies

Wed Nov 16, 2016 8:39 am

if this is an old model B with full sized sdcard the see if the socket is warped.
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MacFizz
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Re: How does a RPi dies

Wed Nov 16, 2016 9:31 am

Yep, it's an B model with full size SD.
I changed the SD card thinking it might have bended a little because of the contact springs and heat.
I'll check the sdcard reader's soldering.

If the rpi can't boot from usb, I doubt the integrated sdcard reader is fixable...

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RaTTuS
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Re: How does a RPi dies

Wed Nov 16, 2016 9:38 am

only model 3 can boot from usb
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FTrevorGowen
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Re: How does a RPi dies

Wed Nov 16, 2016 1:25 pm

RaTTuS wrote:if this is an old model B with full sized sdcard the see if the socket is warped.
Or the early signs of this type of failure:
http://www.cpmspectrepi.uk/raspberry_pi ... ilure.html
Trev.
Still running Raspbian Jessie or Stretch on some older Pi's (an A, B1, 2xB2, B+, P2B, 3xP0, P0W, 2xP3A+, P3B+, P3B, B+, and a A+) but Buster on the P4B's. See: https://www.cpmspectrepi.uk/raspberry_pi/raspiidx.htm

MacFizz
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Re: How does a RPi dies

Thu Nov 17, 2016 11:15 am

FTrevorGowen wrote:
RaTTuS wrote:if this is an old model B with full sized sdcard the see if the socket is warped.
Or the early signs of this type of failure:
http://www.cpmspectrepi.uk/raspberry_pi ... ilure.html
Trev.
I checked the sdcard socket and everything looks fine.
I resoldered the sdcard contact on the PCB just in case but nothing new.

However, something really odd:
After letting it rest overnight without any card inserted, it worked. I shut it down and then, the problem reappeared.
Could it be capacitor related somehow, taking some time to cooldown or something ?

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FTrevorGowen
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Re: How does a RPi dies

Thu Nov 17, 2016 12:09 pm

MacFizz wrote: ...
However, something really odd:
After letting it rest overnight without any card inserted, it worked. I shut it down and then, the problem reappeared.
Could it be capacitor related somehow, taking some time to cooldown or something ?
More likely a polyfuse** issue (partial tripping for some reason). What's the voltage on the "5V" supply rail and what are you powering it with? (One possible cause of "partial trips" could be a "spikey" PSU).
Trev.
** How many polyfuses does it have? - (early) B1's had three (two extra, 140mA ones on the USB ports), B2's onewards, just the one.
Still running Raspbian Jessie or Stretch on some older Pi's (an A, B1, 2xB2, B+, P2B, 3xP0, P0W, 2xP3A+, P3B+, P3B, B+, and a A+) but Buster on the P4B's. See: https://www.cpmspectrepi.uk/raspberry_pi/raspiidx.htm

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