Along this last summer I've been repairing a friend's colecovision (Hi Armando!) and it turned out to be a nightmare. The Colecovision was really in a bad shape, worse than expected and after more than two months of checking and fixing, here's the result:
The Coleco ended up being mostly socketized, the list of damaged and replaced ICs is long: U10-U17 (all 8 VRAMs!), U5 (74LS138), U9 (TMS9928), U21 (LM1889) and U23 (HEF4066). Basically seems that all the video generation system was strike by a lightning!
Here's a close-up pic: