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by tonymcconnell
Thu Apr 07, 2016 3:14 pm
Forum: Troubleshooting
Topic: RPI3 breaking SanDisk SDHC cards?
Replies: 23
Views: 5055

Re: RPI3 breaking SanDisk SDHC cards?

OK, so I've now got my new NOOBS SDHC plus official raspberry Pi 2.5a PSU. Just booted into raspbian successfully. Shutdown, power off. Power on, still boots. Browsed internet a bit. Shutdown, poweroff. Power on, still boots. Shutdown, poweroff. Power on, still boots. You spot the pattern? ;) At thi...
by tonymcconnell
Thu Apr 07, 2016 1:23 pm
Forum: Troubleshooting
Topic: RPI3 breaking SanDisk SDHC cards?
Replies: 23
Views: 5055

Re: RPI3 breaking SanDisk SDHC cards?

jamesh wrote:
RaTTuS wrote:you may have a rouge RPi - RMA it is it is
This. I suspect a HW fault with the Pi. Seems the best logical conclusions.
I agree, which is why I RMA'd the PI and am puzzled as to why my problems continue.
by tonymcconnell
Thu Apr 07, 2016 1:21 pm
Forum: Troubleshooting
Topic: RPI3 breaking SanDisk SDHC cards?
Replies: 23
Views: 5055

Re: RPI3 breaking SanDisk SDHC cards?

you may have a rouge RPi - RMA it is it is I am definitely beginning to see rouge ;) Yeah, that's what I thought when my first SanDisk was trashed. So I RMA'd the Pi and the SanDisk at the same time. Got a new PI, new SanDisk, and it was trashed after powering on the Pi (never booted, solid red-lig...
by tonymcconnell
Thu Apr 07, 2016 1:09 pm
Forum: Troubleshooting
Topic: RPI3 breaking SanDisk SDHC cards?
Replies: 23
Views: 5055

Re: RPI3 breaking SanDisk SDHC cards?

Right, I'm off to Farnell to buy another SDHC card with NOOBS preinstalled.

Also, I'm buying an official RPI2/3 power supply.

If it trashes another SDHC again, I'm getting a Pine 64 :P
by tonymcconnell
Thu Apr 07, 2016 11:08 am
Forum: Troubleshooting
Topic: RPI3 breaking SanDisk SDHC cards?
Replies: 23
Views: 5055

Re: RPI3 breaking SanDisk SDHC cards?

can you measure the power on the test points of the RPI OK, I've got my picoscope out and checked against PP2. Shows the supply is bang on 5vdc, PP8 at 3.3vdc, PP9 at 1.8vdc no spikes on power on, PP2 straight up to 5vdc where it remains. Power on scope picture attached. Takes around 200ms to compl...
by tonymcconnell
Thu Apr 07, 2016 10:08 am
Forum: Troubleshooting
Topic: RPI3 breaking SanDisk SDHC cards?
Replies: 23
Views: 5055

Re: RPI3 breaking SanDisk SDHC cards?

RaTTuS wrote:can you measure the power on the test points of the RPI
OK, cheers, I'll give that a go.
by tonymcconnell
Thu Apr 07, 2016 10:05 am
Forum: Troubleshooting
Topic: RPI3 breaking SanDisk SDHC cards?
Replies: 23
Views: 5055

Re: RPI3 breaking SanDisk SDHC cards?

Are you allowing the Pi to fully shut down before removing power? The green LED should flash 7 or 8 times IIRC before it's safe to swirch power off Yep, I'm allowing the PI to shutdown correctly, before removing the power. In any case, wouldn't that just corrupt the card file system rather than ren...
by tonymcconnell
Thu Apr 07, 2016 9:37 am
Forum: Troubleshooting
Topic: RPI3 breaking SanDisk SDHC cards?
Replies: 23
Views: 5055

Re: RPI3 breaking SanDisk SDHC cards?

If anyone fancies buying one to try it out, I'd be both very surprised and grateful at the same time ;)
by tonymcconnell
Thu Apr 07, 2016 9:32 am
Forum: Troubleshooting
Topic: RPI3 breaking SanDisk SDHC cards?
Replies: 23
Views: 5055

Re: RPI3 breaking SanDisk SDHC cards?

Wonder if it's the power supply? It's a:

MW Switching power supply, model MWUSB3UK
PRI: 100-240V ~60/50 Hz 260mA
SEC: 5V 2100mA
I.T.E Power Supply
by tonymcconnell
Thu Apr 07, 2016 9:15 am
Forum: Troubleshooting
Topic: RPI3 breaking SanDisk SDHC cards?
Replies: 23
Views: 5055

Re: RPI3 breaking SanDisk SDHC cards?

So, this morning, after having shutdown the pi correctly yesterday via gui shutdown menus, the PI will not boot.

The SD Card is again unreadable on any computer.

It's a transcend 9181AA 16G 07SS2, this time.
by tonymcconnell
Wed Apr 06, 2016 1:50 pm
Forum: Troubleshooting
Topic: RPI3 breaking SanDisk SDHC cards?
Replies: 23
Views: 5055

Re: RPI3 breaking SanDisk SDHC cards?

Yes both SanDisk and Pi bought from Farnell.

I've never had any similar problem with Pi 1 / 2.
by tonymcconnell
Wed Apr 06, 2016 12:55 pm
Forum: Troubleshooting
Topic: RPI3 breaking SanDisk SDHC cards?
Replies: 23
Views: 5055

Re: RPI3 breaking SanDisk SDHC cards?

Yes, it's odd. I've been googling for SDSQUNC-016G-GN6MA and seen a few benchmarks where the card is used. Very peculiar.

The cards are now *un*recognisable via fdisk, within various different USB card readers, and operating systems.
by tonymcconnell
Wed Apr 06, 2016 12:42 pm
Forum: Troubleshooting
Topic: RPI3 breaking SanDisk SDHC cards?
Replies: 23
Views: 5055

Re: RPI3 breaking SanDisk SDHC cards?

Got a Transcend SDHC with NOOBS pre-installed. Now boots.

So, PI seems to be irretrievably breaking the SanDisk cards.
by tonymcconnell
Wed Apr 06, 2016 11:31 am
Forum: Troubleshooting
Topic: RPI3 breaking SanDisk SDHC cards?
Replies: 23
Views: 5055

RPI3 breaking SanDisk SDHC cards?

Hello, Recently got a new RPI3, 2.1A supply, and a Sandisk SDHC 16GB SDSQUNC-016G-GN6MA Downloaded NOOBS 1.9 and unzipped onto the SDHC card. All good so far, files can be seen on the card on several different windows/linux computers. RPI3 not powered, plugged into USB keyboard/mouse, HDMI 1080P mon...

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