How do I replace the circuit motherboard?

Researched same problem for HP dv9543/9500 9000 series;

Had similarly hoped it was the power jack feet with broken solder...unfortunately not. On dis-assembly I found that the socket is designed to preclude this by having its own mini-board and then a cable goes from there to the motherboard.

It appears to be likely a charging chip or similar.

You likely can run the laptop by charging the battery, which tells you that the laptop is otherwise functioning normally.

As a stop-gap solution you can get an external battery charger that will connect to the battery directly (EBay); two batteries and you can alternate.

And/or the HP-Dock which will power the laptop via the cardbus slot with a cable connecting them.

Also saw on ebay a vendor that would fix the charging circuit section (or other issues) for $75 I believe.

Unfortunately, my laptop was with the offspring overseas in the jungle, and had to send another motherboard to him via a friend.

Further unfortunately, the replacement motherboard had the graphics chip heat problem alluded to by the first answer person; and the graphics chip had to be used from the original motherboard.

The laptop failed within warranty but was of course not here nor was I told of the problem until after expiration; have 3 of the same model laptop--flagships of the time with two hard drives.

another ebay outfit will reinstall the NVidia GSM-8000 or something graphics "board"/chip with a copper pad or something to solve the heat dissipation problem.

(now it is back nearly a year later with the video off, so assume the chip overheating problem--had it working for awhile--now off)

hope the info may help

The following guide could be similar.

How to disassemble HP Pavilion dv6500, dv6600, dv6700, dv6800 notebooks

Not sure if this is still an issue for Jay but just in case. Jay, like Marcus said this model sure has its problems. See my full answer on will not power on where I described how to possibly fix your issues. Good luck to you.

You can access service manuals for all HP laptops at Laptop Manuals Hub

Find your manual and follow the instructions.