It's not just electronic/electrical...it's MUCH more!~ BWAH HAHAHA!!!
I'm thinking of submitting my greatest resurrection - a 1940 Chevy coupe that was less than a basket case when I got it. I did a frame off (and partial frame replacement) rebuild. It's now a much faster, much better handling, better looking, MUCH lower, better sounding car with digital instrumentation and multi-amp, 10 speaker stereo. And I did most of it myself.
@Kinnar Caleb is correct, we're not looking for an encyclopiedic description of a repair job, the main gist will do. And the 1,000 word limit is really intended for those of us who, uhm, tend to write a little more verbosely than our more taciturn counterparts.
Yeah, it sounds difficult but it isn't necessarily. Just try to remember the story of how it all happened. If you've still got the device you could take a few pictures. It doesn't have to be in-depth documentation
This is really very different out of box idea of a technical event. But the document being asked for participation is quite difficult to get as they will not be having idea about participation at the time of fixing the thing.
But still if you want to win a good quality and brand scope one will have to recreate the fixing environment!!