Hi, I have managed to get a second hand motherboard for a Samsung R710 that I am currently re-building, it's an on going project sort of thing.
My problem:- it came to me with a charging problem but it was cheap, so I took the risk and changed the DC jack, bear in mind I am no expert with a soldering iron, here's what happens now.
Motherboard works fine on battery power only.
Motherboard does not work on AC power only.
Motherboard does not work on AC power + battery installed.
If I plug in an external monitor the motherboard works fine, charges everything.
Any ideas from anyone would be much appreciated.