On 19 Jul 2015 17:40:08 GMT, itt788 wrote:

I have a laptop motherboard which suddenly had its DC input ends short
circuited. It workded normally for hours and switched off normally. When
trying to run it again some day after it won't boot up and I noticed that
the DC input ends were short circuited.

Look for a big reverse power protection diode across the DC input
connector. Also, if your battery charger is of the "universal"
variety, look for the power being applied backwards.

If that's not it, I suggest you disclose the maker and model number,
and if it works on battery power.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558