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Just an update... i bought another us power supply and all is working fine now. Now i guess i can hack my canadian power supply up and see if i can get it working or maybe attach the end to one of those arcade power supplies.

Thanks Ill send them some nessages tomorrow morning. So frustrating. The worst oart is i have 41 new colecovision games that came in the mail today and i cant play any of them. Lol

Cheapest one on ebay dot ca right now is around $55 Canadian after shipping.

Crap. I tried wiggling it around but couldn't get it to read any voltage on the 5 volt pin. I guess I am buying another power supply afterall. At first it was at least trying to turn on for half a second. Now the blue power LED doesn't turn on at all.

OK, now I am even more confused. I took it apart and looked for any loose connections and didn't see anything that looked out of place. So I bring it back upstairs and just for the heck of it I decide to stick the multimeter back in the power supply holes again, and now the first and 4th hole are reading no voltage at all instead of 5 volts! WTF! It was working perfectly when I tested it an hour earlier. Heck, I even recorded myself testing it on my camera phone so I could upload the video to my youtube channel, so I know I wasn't doing it wrong. Of course I just finished leaving positive feedback to the ebay power supply seller since I was so pleased with myself for being able to test the power supply myself and prove it was working. Ugh! Do you think I should bite the bullet and buy another power supply? Why would the voltages be reading correctly one minute then be wrong an hour later?

OK, never thought of that. Hopefully it is something simple like a loose wire somewhere. Time to search for a video on how to take these apart now. LOL

OK I found a youtube video that showed basically how to test the power supply. He is checking it internally in the video but I just stuck the multimeter pins in the holes on the end of the power supply cord. http://www.youtube.com/watch?v=TfO1VFQBAvY There are 4 holes. When I test the first two holes on the left, I get 12 volts. When I check the first hole on the left and the third hole from the left (on the bottom row) I get -5 volts. Then when I check the first hole from the left with the upper hole on the right I get 5 volts. So if I am doing that correctly it appears to me there is nothing wrong with the power supply. Am I correct?

So I bought a modded Colecovision off bradd1978. It appears to be in excellent condition and was supposed to have been refurbished and has a blue power LED and composite video out. When I bought it, it never had a power supply, so I couldn't test it. I finally bought a Canadian power supply off ebay as I heard they were the superior model. Of course I still have no games. So I bought a lot of games off here from Mumbai (they arrived today and are in ridiculously amazing shape. I almost don't want to take them out of the package.) Anyway, so now that I can finally have a colecovision, a power supply and games to go with it, it turns out it doesn't work!!! So how can I figure out where the problem lies. When I switch it on the blue LED turns on for a second, and the TV looks like it is getting ready to detect a signal, but an instant later the blue LED goes out and I sit there with a black screen and no activity from the Colecovision. Would your guess be a bad power supply? How can I figure this out? Anyone have an extra power supply they can sell me? I had to pay almost $40 for this one since I am in Canada. Half of the price was the dam shipping. I don't really want to sink that much money into another power supply if there's nothing wrong with this one. I haven't left feedback on ebay yet for the power supply I bought, but I don't want to just come out and accuse him of selling me a bad one when I have no idea if that is what the problem is. Is there some way I can test it to show proof? I do have a little multimeter I bought years ago, but I'm not really sure how to even use it or how to test the power supply. Any help would be appreciated.

Man that thing is awesome. Wish I lived closer. Bump for a crazy deal. (Hmm, why is my font so small? I had to change it to 24 font to make it appear normal size.)

Love that cabinet. Nice work.

I played and finished Ultima 4 on the master system. I don't think I would have to patience to do it today. I did it back when the master system was still a current gen system. Unfortunately I haven't had a chance to play any of the other versions.

Is there any other sources or replacement power supplies available? I'm just pricing the OEM on ebay now and while they go for around $20, which is reasonable, in Canada I end up having to pay another $20+ shipping. You'd think there'd be a Chinese replacement out there that you could just swap in. How about the universal power supplies they sell at radio shack and places like that?