It doesnt flash white, in fact, it doesnt flash at all.
Yeah...this sweet dear will be getting wrapped in bubble-wrap and shipped off to (hopefully?) be hospitalized....
Hm. I've done my fair share of DS repair for my own system and for my siblings'. But it's been at least a year since I worked on one or read about any of it, and without seeing it I can't be terribly sure what's going on unfortunately.