Killed a Stratix-II Nios II Altera devkit, How to repair?

Apr 27, 2007 3 Replies

Hello,



to due a unfortunate chain of events, the cooler of the ep2s60 dropped to the right side of the chip and short-circuit an unkown number of lines (could be at least 1.2V and GND). Fuse F3 has been destroyed, so only LED5 was ON; the rest of the board has been dead. I replaced F3 and now the board is trying to program the FPGA from flash (User LED and Flash_CE_n are ON), but it never succeeds. Pressing the button 'Reset Config' turns all LEDs OFF, except LED5. If I press 'Factory Config' after that, the LED 'Loading' turns itself periodically ON and OFF (period is about 15-20 seconds) a few times and finally stops with the LED 'Error' ON (everything else beside LED5 is OFF).



Programming the Stratix-II via JTAG works fine - with the exception that any bus access seems to fail (e.g. a Nios design reacts to the cpu reset button, but after a reset Flash_CE_n turns ON and never turns OFF again).



Unfortunately I have no oscilloscope or logic analyzer at hand to further analyze the problem.



So if you have any hint or advice except buying a new board (which I am already about to do), I am certainly listening.



Thanks in advance, Bernhard Froemel



Ups, my post was a little premature in retrospective :)

It's been the oscillator ... now everything works again!

Nice greet> Hello,

Congrats !! I was worried for you and am glad you have the board up & running again.

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required