2019 eBay Repair Challenge - Week 4 - 1978 Robot

Hi, this video is Week 4 of the new eBay Repair Challenge. In it I attempt to fix a Mego 2XL Robot from Burbank Toys from 1978-1981.
eBay Repair Challenge Participants:
Vince from My Mate Vince
Steve from Tronicsfix:    / @tronicsfix  
Elliot from The Retro Future:    / @theretrofuture  
Paul from Tampatec:    / tampatec  

eBay Repair Challenge Rules:
1) Whoever makes the most profit wins.
2) Item specifications:
Week 1 - Electronic item manufactured before the year 2000
Week 2 - Mechanical item (clock/ automatic watch/ clockwork toy) - It can be a mix of mechanical and electric but must have moving parts.
Week 3 - Modern game console made after 2010
Week 4 - Antique item - Anything manufactured before 1990
Week 5 - An item of our choosing
3) A maximum of 5 items
4) Financial restrictions: Start with $200 and we can roll the profits into our next purchases. At no point can we put more than $200 of "our own" money into the pot for purchases.
5) Everything has to be bought and sold on eBay

Remember that this is just for entertainment and I am not an expert in these repairs. The processes in the video may not be the best way, the correct way or the safest way to fix these things.
I do love fault finding and trying to fix broken things so I hope that comes across in this 'Trying to FIX' series.
Many thanks, Vince.