On 4 July 2013 09:44, Renato Golin <renato.golin@linaro.org> wrote:
> On 3 July 2013 23:01, Will Newton <will.newton@linaro.org> wrote:
>>
>> It may also be worth examining your power supplies and see if they are
>> providing enough current to run the chip this hot reliably. A bench
>> supply could eliminate this possibility conclusively.
>
>
> They're cheap... *very* cheap... They're not the ones Linaro uses in the lab
> most of the time, but are the ones Linaro has loads of in the "power supply"
> drawer, and the ones that websites show you as "PandaBoard power supply".
>
> Not this one:
>
> http://www.digikey.com/product-detail/en/PSAC30U-050/993-1019-ND/2384432?cur=USD
>
> This one:
>
> http://www.amazon.co.uk/Pandaboard-Board-replacement-supply-adaptor/dp/B0087SU0RU

What is the output current of this PSU? I tried running pandaboard
with 2.5A PSU and it didn't even start. 3A seems to be the minimum.

milosz

>
> The difference in price tells you a lot... ;)
>
> This was my conclusion when my Panda at home, on idle, was locking up. It
> wasn't turning off every time, some times it'd just lock and have one LED
> constantly on and the other constantly off, sometimes it'd shutdown
> completely, and some times the screen would freeze, but it'd still be
> "running". With many other appliances connected to the same socket (TV, Sky,
> PS3, printer, etc), the spikes could be causing trouble.
>
> The boards now have run overnight at 920MHz without a glitch, though they
> are understandably 50% slower. I'll see how they behave during today, and if
> they don't fail, I'll conclude that it was, indeed, the frequency, not the
> power supply.
>
> cheers,
> --renato
>

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