Kentucky fried my laptop's charger circuit

[CrashBandigood]

hey EEVBlog,

so last year I got myslf a nice acer laptop for like 300 bucks which has served me well. however, eventually the charger cable became dodgy and I had to fix the connector myself (especially because the model wasnt sold anymore) this work fine for like a month or 2 but I had to resolder the connector every 2 weeks or so so I got myself the amazing chinees all in one laptop charger solution. which also worked, however, it had multiple voltage settings which was controlled by a pretty crappy switch and one day I noticed that I accidentally left it on 24V instead of 19, i hastily switched it back to 19, forgetting that the laptop was still plugged in.

the magic smoke escaped from the whole charger circuit which renders that whole area useless. the charge port is basically a dead short now, but the laptop functioned exactly as before, it only was unable to charge. my idea to get the thing to work was to try and more or less trick the computer into thinking that the battery is full and would then actually just cut the +- of the battery connector and connect it voltage source that should provide the 11.5V as the battery indicates. one question is, will this fry this laptop even more? still a first years electrical engineering student and I almost should kinda work but I still have doubt. do you guys have any idea on how to get it to work.

In short, I cant charge the battery over the conventional connector, do you guys maybe know of some alternative way to still get it to work.

[Monkeh]

It's dead, Jim. Either repair the charging circuit (good luck!), or replace the laptop.

[james_s]

You might get lucky and be able to replace a diode or converter IC and fix it, but it may not be trivial to identify the bad part(s). You might also find a spare motherboard or an identical laptop with a broken screen or other fault on ebay. You'll have to decide whether the laptop is worth investing the time, effort and money into.