Im trying to figure out a fix for this Laptop that was working fine, was installing a load of updates and the machine had been running fine (fan was on and getting warm) then phut !.. it all goes out since then if you press the momentary power button you get all the lights come on but only for a second or 2, then they all go out.
Battery is fine, as is the powerpack ive stripped the unit down to motherboard (less HDD and CD) to try and work on it, seems to me like whatever 'holds' the power on when you release the key has failed (theory sounds simple!) but does anyone know where to start, i dont have any schematics or knowledge of this laptop.
Measuring around the motherboard im seeing 5v on the switch pcb, 16.5v near the battery 3.3v near the switch connector.
Any ideas very welcome!