notebook cannot be turned on any more

[MH161]

Old laptop pavilion dv6500 given to me as I am poor. Main battery is dead, running it via power supply, upgraded to Windoze 7, worked still quite well.

Suddenly can't turn it on any more by pressing switch. Changed CMOS battery, checked power supply, works fine.

Probably some part on the mainboard gone, perhaps only a condensator or similar.

Have no clue how this power on works, but soldering in a new part would be no problem if I knew which one and where.

Do not want to throw it away for several reasons, would prefer to repair it.

Any tips?

[Huffer]

I need the exact model number to be sure, but the AMD versions of that model series with nVidia graphics were prone to video chip failure. There are lots of video on you tube and such discussing the issue. The main chip on the motherboard separates from its connection with the ball grid array. Some had success by heating the chip with a hot air gun or even baking in an oven to get the solder to soften and the connections reestablished. I am recalling some pretty old history here. If you want some more detailed info post back and I can see if I can come up with some specific links for you. Intel versions were not immune to this but failure was much less common. Guerilla repairs were generally short-lived, however and could not be done a second time. 

[MH161]

Thank You very much for your helpful and knowledgeable answer. Amazing, did not expect to get any.

The computer indeed has NVidia graphics. S/N CNF7292KRV

If I understand you correctly, heating the video chip with a hot-air gun (essentially like soldering SMD parts?) would count as "guerilla repair" (apt expression  🙂 and probably only help for a short time?

A friend of mine does a lot of soldering electronics this way, but has no experience with computers. If we can just identify the correct chip it might be worth trying to prevent the thing from becoming electronic waste.

[Huffer · Accepted solution]

This might be helpful. 

https://www.youtube.com/watch?v=mYH9GXWcNqQ&ab_channel=Dayton

Just be careful. You get one chance to do it right. I have never done it myself but witnessed it done maybe 6 or 7 times and it was maybe 50% successful and one of those lasted a year, the others weeks or a few months.