Panda dead (worked fine in EU, doesn't in US)

[Jan C. Nordholz]

Dear knowledgeable list,

I've recently taken my Panda on a flight to the U.S.;
In good ol' Germany the board was booting merrily, but
now there's not even a flashing LED.

My first assumption was that the power supply I brought
along isn't getting enough wattage out of the US 110V grid
(before you ask: yes, it accepts both), so I got myself an
USB OTG Y-cable as suggested elsewhere.

Still no sign of life whatsoever (and Linux doesn't even
notice that there's something on its USB bus, either).
I've checked the board surface thoroughly, no obvious signs
of damage (and it was in my cabin luggage, not thrown around
with the rest - so it just got x-rayed, heh).

What would you suggest as next steps in reviving the poor
thing? Check if there's any voltage on the JTAG pins? Is
there an easy-to-reach spot where I can check if there's
any power going into the board and where it's magically
dissipating? Other obvious things I might have forgotten?


Thanks so much,

Jan

[Jan C. Nordholz]

[Nipuna Gunasekera]

You can probe Vcore1, Vcore2, Vcore3 using the test points in the Panda user guide  Page 64 for OMAP4430 PandaBoard. :

http://pandaboard.org/sites/default/files/board_reference/pandaboard-a/panda-a-manual.pdf

-Nipuna