原帖由： Alex Niculescu ,
Hi! Disassembling your 3DS seems like the best thing you could do right now. Follow [guide|6017|this guide] to get to the motherboard, YouTube videos are not always 100% accurate. As you said, cleaning all the contacts on the ribbon cables and the board itself is also a great idea. Use Q-tips and rubbing alcohol - (isopropyl, highest purity you can find) and gently clean everything. If you see something that looks off on the board, like burned spots, report back, also update your post with pics.