The power supply is, IMO, the main weakness in ColecoVisions today. Often, power supplies no longer supply a sufficient voltage on the +5V line, and the graphics chip doesn't tolerate voltage drops on that line. Out of multiple old ColecoVision power supplies I've seen, only few worked well. Personally, I often used an old power supply with the +5V line supplied from a programmable power supply instead.   However, apparently someone has new power supplies for the ColecoVision. They seem to con