This video shows the internal workings of the ultimate wall-e. i wouldn’t recommend you take apart this of you happen to have one inless your confident and you have tech knowledge.
Bottom board by the rainbow coloured flat cable.. says"S3 08" or 5308. Week 53 (can't be!) in 2008. Is it that old. Nice item, seen it dance on other video. A chip made for the job. Blob chip on top and bottom board. The transistors (bigger board mounted) or similar to turn the power onto things, motors I guess.