DSO Nano v2 - Magic Smoke Released

Just got my brand new DSO nano v2 in a couple of days ago, and I have already managed to let out the magic smoke.

Apparently the probe was not securely in place when I placed the positive lead to a 2 AMP 12V line. I got a spark and then the nano just stopped operating.

It appears I fried the small controller/regulator on the batter and U9 (not sure what it is yet).

Anyone else have this problem? Anyone know what U9 is and where I can get a replacement? Anyone know how to replace the battery?

Any help would be greatly appreciated.

Thank you!

the U9 is a 74HC125,just a Quad buffer/line driver,3-state,it is nothing to do with you DSO work status…
you should check the U4 and U5 instead.


are you sure you got the right port for the probe as the U9 (74HC125) is used as a line driver for the signal generator.

You can find the schematic for the V2 here: http://code.google.com/p/dsonano/

The Schematics: