First post, by Ahrle
Picked up this P4 laptop with a really weird behavior.
Came with no charger to begin with. Bottom sticker says 18.5V.
Using a universal adapter at 18.5V, it shows a mixed behaviour. From not booting at all, or completing POST and freezing with a blank screen, to booting fully into Windows and operating perfectly. No charge LED ever lights up, and the last 2 times it popped "103 Charge circuit failure".
Using the same adapter set to 19V, 103 error disappeared. Charge LED still off.
Then I have a mismatched voltage (19V) PSU used for an LTE 5400. That one works perfect every time, and unlike the general purpose adapter, charging LED lights up too.
Questions:
Could there be a problem with the general purpose AC adapter?
Why does it work so bad with its original voltage?
Is it harmful to use the 19V adapter as 18,5V appears not enough?
Thanks