I agree that the Canadian Power Supply is A LOT more reliable and less prone to problems and this is indeed due to Canada's stricter policies concerning electrical products. All that being said, I have had UNBELIEVABLE luck with all the ColecoVision and ADAM Computer systems (at least 10 of each) that I have purchased via eBay or other means over the last three years.... only one ADAM Memory Console was bad and easily fixed by swapping out the ADAM Logic Board.
All the CV systems that I have acquired were the U.S. version with the U.S. Power Supply (one-wire wall wart) and aside from the usual refurbishing of the hand controllers in a couple cases (not all), the only issue I had with a U.S. Power Supply was one that would not work with either AtariMax Multi-Cart or Lord of the Dungeon (all other games tested worked flawlessly)... obvious sign of a Power Supply that isn't outputting proper voltages and is sure to die a slow death the more it's used.
I have heard and read about so many horror stories over the years from others in the retrogaming scene and it really does amaze me how lucky that I've been with my purchases. I'd like to chalk it up to experience and knowing what to look for and what to avoid, but it really does all boil down to DUMB LUCK especially considering the way some of these purchases were packaged.
With all that being said, I use a Canadian Power Supply on the CV system that I use and have a spare just in case. The only U.S. Power Supply that I have kept is boxed up with the only CV system I have left that is original (not modded in any way) and it and the box are a beautiful specimen.
Aside from that, don't be lazy with your handling and care of the CV. When not in use, unplug it from the surge protector (a good one) and don't take a chance plugging directly into a wall outlet. Also, don't do any kind of hot swapping of cartridges or hand controllers, always turn the system off first, and you will extend the life of your system.
Edited by NIAD, Thu Aug 16, 2012 2:51 PM.