Hi,
You might probably want a replacement. I'd have you contact Xbox 360 support and ask for a replacement.
If you want to purchase a new Xbox slim 360 AC power supply, you could probably visit Microsoft store and order one.
Except it is impossible to find one at the Microsoft Store site. A search sorted by relevance displays many pages of results, but stops returning Xbox-related ones without a power supply ever appearing.
So where/how can I actually buy an authentic replacement power supply, please?
Hi,
This info you posted was extremely helpful. I contacted the: contact Xbox 360 support as listed above and went thru the trouble shoots to verify it was in fact, the power cord. Then I was able to order a new one for about $35.00 with shipping and taxes, (since the site verified that our original warranty had already expired).
Thanks :-)