ColecoVision owners no longer use the ColecoVision power supply after they purchased Expansion module #3 the ADAM computer. Both the standalone ADAM and the Expansion module #3 ADAM use the power supply in the ADAM printer to power the computer and the ColecoVision motherboard. The ADAM printer has always been a negative part of the ADAM with complaints going all the way back to 1983. A cost cutting decision by Coleco was to not develop a standalone power supply for the ADAM. All ADAM owners always had to use the ADAM printer to power the ADAM. Back in 1983 a letter quality Daisy wheel printer was nice, however the ADAM printer is also extremely noisy and can sometimes over heat since the power supply for the entire computer is inside the printer. Coleco should have designed a standalone power supply for the ADAM. If they would have did this then they could have released the ADAM without the printer for a few hundred dollars cheaper.
People that used external third party printer interfaces with a Laser printer or other external printer for the ADAM were forced to use the Adam printer also so that they could power their ADAM computer. As the ADAM printers started breaking down or were not being used anymore. People started tearing apart their ADAM printer and removing the computer system power supply from the printer. Many ADAM owners were also able to purchase the original Coleco printer power supply between 1985-1990 since Coleco sold a lot of spare parts to mail order companies. There were so many people taking the power supply out of their Coleco printer and/or buying the bare internal Coleco ADAM printer power supply from mail order companies, that third party companies started making a little plastic or metal case covers to screw on top of the bare Coleco printer power supply that powered the entire ADAM computer system.
Micro Innovations never released a power supply for the ADAM computer as far as I am aware. Many companies did not want to touch this issue. However, with 1MB and 2MB memory expanders hooked up to the ADAM along with other devices, the ADAM printer power supply could not output enough power. Some mail order companies in extremely small QTY’s developed external third party power supplies for the ADAM computer. They used an old ADAM power cord and converted a factory new 230WATT power supply so that it worked with the ADAM computer. This 230watt power supply was more than enough power to power anything hooked up to the ADAM including 2MB memory expanders and anything else located in the 3 internal slots. Also the 230watt PC power supply had a on off button with a internal fan. In addition, this external new 230watt power supply would power the Coleco ADAM printer when the printer was connected to the DB9 jack on the side of the power supply. One could leave the ADAM printer connected and hit the on/off switch on the printer when they wanted to turn on and off the printer. Since an external power supply was powering both the ADAM computer and the Coleco printer, the printer lasted longer since there was less heat occurring.
Pictured below is the Coleco ADAM printer, bare internal Coleco power supply that was inside the printer, and the 230watt third party ADAM power supply that was top of the line back in the late 80’s and early 90’s. In the future, it would be possible to re-release a ADAM power supply using either a modified PC power supply like pictured below or design a custom power supply made from scratch.
A lot of third party companies did not want to make a power supply for the ColecoVision and ADAM computer for various reasons. That is why products like pictured below are rare:
Edited by HDTV1080P, Sat Aug 26, 2017 12:13 AM.