Question HP laptop shorted out

[Exorion]

My HP laptop went up in smoke after I plugged it in after not using it for awhile. I opened it up to find out a mosfet burned up. I replaced the mosfet but I still get a short. Where would I test for the short?

 

[lga1156_ftw]

What model laptop. And what Is motherboard model number its written on the board

 

[Exorion]

What model laptop. And what Is motherboard model number its written on the board

The board number I believe is 11A39-2. The laptop is a HP Pavilion DV6-6163cl

 

[lga1156_ftw]

Anything dv5 dv6 dv7 series related gives me still nightmares. is it power switch mosfet ? line from dc-in?
Do you have power supply so you could apply voltage to find the short? Its easier this way bad component heats up and you can use isoprophyl alcohol to see which one heats faster thab other

What part is it i can check from schematic what to look for, any liquid damage corrossion anywhere? Are traces still fine how bad it burn?

 

[Exorion]

Anything dv5 dv6 dv7 series related gives me still nightmares. is it power switch mosfet ? line from dc-in?
Do you have power supply so you could apply voltage to find the short? Its easier this way bad component heats up and you can use isoprophyl alcohol to see which one heats faster thab other

What part is it i can check from schematic what to look for, any liquid damage corrossion anywhere? Are traces still fine how bad it burn?

I'm not quite sure but it used to turn on but it was stuck in a power cycle, the fan would turn on and off, now it doesn't turn on at all. Whenever you press the power button a chip that might be the thermal fuse gets incredibly hot, but still charges unless I put the mosfet back where the burned area is. That gets hot and the charging light flashes for half a second. The laptop has never been in contact with any liquids and I didn't see any corrison. I think it burned either just the top layer or SGND second layer

 

[Exorion]

Also I'm just trying to see if i can get this board working cause its hard to find the exact kind and its about 150 online in most places

 

[lga1156_ftw]

take high resolution pic, i pm you schematic

 

[lga1156_ftw]

what was the component, Read near the component on the mainboard example PQ812, then compare to schematic

Look if any usb ported is shorted pins, look connectors for shorted pins on the mainboard. you can rule out that part of the circuit if it boots with battery only connected no power cable, test.

 

[Exorion]

I think there was times where windows said usb malfunctioned but I didn't think much of it.

 

[Exorion]

I think there was times where windows said usb malfunctioned but I didn't think much of it.

It doesn't power on at all. In the schmetics look at PU12 which looks related to cpu power and PQ821 or PQ822. I also don't know how to post pictures here

 

[lga1156_ftw]

Just post link To pics if you dont know

 

[lga1156_ftw]

what mosfet you replaced? Pictures would be nice