could be the internal fuse? or the power adapter is on its way out? Found the cause of the problem, First I ran PSU into a 4R load to see if it had a problem delivering its rated powerand it maintained 4A ok at 16V so it wasn't PSU problems. I then obtained the Venice schematic diagram to see if i ...

Hi my thinkpad A31p has recently developed a fault where by it works fine off the battery but as soon as you plug in a powered AC adaptor the laptop goes instantly off. if the ac adaptor is un-powered you can plug it into the laptop and it remains working but as soon as you plug the adaptor into the...