I have a laptop Compaq CQ62 visitors who present a problem of power...

I bought two taken DC-in harness and tried both. No of them light up (the plug with the led on this issue), or make one of them turn on the laptop the battery. I also tried another adapter HP power as a generic, nor of what works with any of the 3 DC-in Sockets I have identical.

Is the light on the Jack supposed to light up under same voltage if not dragged into the motherboard? (still, I looked for when both connected and disconnected). Is there another type of problem that caused the same issue?

My client is the chomping little to have his machine backwards. Unfortunately, he discovered this problem just three days after the expiration of the warranty.

Well, no one ever gives the congratulations for the bad news, but obviously you have a very bad motherboard here. You've done everything you can with replacement power. Yes, if the motherboard is good, you should get the blue light when you plug the adapter into an outlet that is correctly connected to the card. If you do not, there is a power outage on the set.  I'm sorry.

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