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 consist of a power supply capable of supplying the voltages needed by the ColecoVision, and an adapter plug to attach the 5-pin din connector on the power supply to the ColecoVision.
Who is making these? Do they work well (I've seen forum posts of people who have them, and there are no complaints so far)? What are the voltage / current specifications?
Apparently, a German shop was selling these (but they are curently sold out there). Any other places to buy them?