Hello, I am having trouble with my wife's Gateway model MT6705 laptop. I think it will be best to give you the details of what happened and what I've tried in order:

1. Original Gateway power adapter wires FRAY on the laptop side of the AC-DC BOX. A few sparks and a little smoke.
2. Unplugged malfunctioning power adapter immediately.
3. Computer works fine on battery power until it runs out.
4. I order a new "Hong Kong model" power adapter from eBay
5. Replacement adapter matches original in every way I can SEE (19V, 3.42A, positive on inside)
6. Adapter does not work. No blue light for power connection.
7. I don't have a voltmeter, but am certain the new adapter is producing at least some sort of voltage (I shorted the adapter end out with a thin piece filament of wire...dumb idea?)
8. I Get creative/dumb: try stuffing tiny ball of aluminum foil into new adapter hole (I had a feeling the post on the laptop side might not be making CONTACT in there). I try splicing the original adapter back together (white-to-white, black-to-black). Nothing works, power light remains unlit.
9. Order another replacement adapter from a different eBay supplier, this one in located in the good 'ol USA. This device lists its output as “19V = 2.64A/3.16A/3.42A/3.68A(0-3.68A)”
10. Same results from new replacement.

Any help WOULD be greatly appreciated. Thanks!
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4. I order a new "Hong Kong model" power adapter from eBay