It generally presents as the device rebooting after an amount of time. I can provide a full technical rundown of the failure, that may be beyond the scope of this thread, however.
We repair this for free, just use the conventional RMA process, found here:
http://forum.netonix.com/viewtopic.php?f=6&t=1259.
In international cases such as yours, we can also provide replacement components and instructions at no charge, if you're comfortable attempting the rework yourself, and have facilities at your disposal to do so.
If you'd prefer the second option, send me an email using the link to the right of this post, and I will get it on the way as soon as possible.