They swap power supplies all the time without deep research. All I've ever done is match the connections and increase the CAPACITY or WATTS of the power supply. Given such is all mechanical clearances and matching connections all that can be said is "go do that."
Sorry for that answer but I would have to research which of the hundred models Gateway produced with the 2000 label and would likely not find which one you have. To help others help you, if there is a web page with the old power supply or better yet the machine then supply that and see if others will give it a nod. But the usual shop counters do this so often that they'll just look at it and know in about a minute if a standard ATX power supply is what is needed.
Hi folks. My old Gateway 2000 isn't powering up (I just get a yellow light on the power button, as opposed to the standard green light). I remembered that there was a "test" button on the side of the power supply just inside the case. So I popped the side off and pushed it. Nothing (there's an LED next to it - I'm assuming it's supposed to light up?)
So I've gone ahead and made the assumption that the power supply has gone bad. In looking for a replacement, however, I've run into a bit of a brick wall. The stock power supply is a Newton model NPS-160CB. While I cannot find any info on this exact model (except a short blurb stating that they were impossible to find), I found a power supply that claims to be a suitable replacement for this exact model (here--> http://www.atxpowersupplies.com/300-watt-power-supply-fsp-atx-300-gu.php), but it's listed at 300w output, while my original says 160w. In addition the measurements seem to be different as well. Enough that I don't believe this new one will fit in my case.
Is this old machine finally SOL? Any advice would be appreciated. Thanks!