First, thanks for the replies and inputs. Here is an update before I run along.
To recap.... This laptop would run fine on a charged battery but not on the ac adapter alone. Remove the battery and the laptop would instantly shut off. After the battery went dead I charged it with a proper lithium charger (adjustable model plane charger) and it was good for another 30 minutes until it went dead again. The charger was also indicating a bad battery pack but I was still able to charge it somewhat and use it but only on battery.
Iknew the adapter was ok since it works in anotherl laptop and was supplying a measured 18v to the mobo. However, there were no other voltages detected. I spent several hours on the internet learning how to test mosfets in the charging circuit with a multimeter set to diode mode and determined that those were all ok to the specs I downloaded. None were shorted or open but almost everyone I talked to said that chip repair at the mobo level was not worth it because of lack of components, schematics, and proper tools.
This was a helpful site. http://mayohardware.blogspot.com/2010/04/important-parts-on-dv6000-and-dv9000.html
Since a new mobo was $168 with no legitimate guarantee, and a new battery pack was another $50 it pushed the price tag to the chuck it level. So, with nothing to lose, I decided to probe it with a continuity checker before chucking the entire thing. I connected one probe of the continutity meter to the positive pin of the power jack and used the other lead to probe the board listening for the continuity beeps as I went along. Since I already looked at the charging circuit I turned the board over and began probing the passive components.
Long story short, I found an open diode in the first two minutes. There were two of them side by side and both looked like new with no burn marks and each marked "JS". (looks bad in the photo but it's the glue) Not having any smd components I used the smallest diode I had which was a 1N4154 which had a higher rating than the JS one. Even With a magnifier headset and steady hands it was ungodly tough getting that diode paralleled across the open one. It looks like hell in the photo attached but it's in there and glued so it won't move. I could have gotten some on ebay but I wanted to find out if it worked.
As soon as I got it soldered in, I plugged in the adapter, pushed the button, and had blue lights and fan on the mobo..... I shut it down, reassembled everything and happy to say I'm good to go and it's been running now for about five hours. I just have to get a battery now. While I had it apart I added more thermal compound to the processor and video.
I agree that fixing a mobo at the chip level, especially a multi pin device, would be next to impossible without the right tools, you can still check and replace fuses and diodes.