Hello everyone.
Someone brought this poor hp in.
All power rails had normal resistances so i turned it on. Instant power cutoff...
First mosfet was shorted so replaced it...
After that I have tryed to start since no short was on the main power rail. the CPU middle dual mosfet heated up and protection shut down the laptop.
After investigating i have found that when the mosftet turning on then the mostfet got instantly hot (not the CPU)
Removed the faulty mosfet. -> now laptop turns on CPU mildly gets hot but laptop gives the common 5 long 3 short LED error.
Cleaned ME on BIOS but no luck
Tryed original clean BIOS from website by serial number but still 5-3 error led.
All voltage rails are present except GPU.
Any chance that CPU controller is dead or its CPU fail?
Someone brought this poor hp in.
All power rails had normal resistances so i turned it on. Instant power cutoff...
First mosfet was shorted so replaced it...
After that I have tryed to start since no short was on the main power rail. the CPU middle dual mosfet heated up and protection shut down the laptop.
After investigating i have found that when the mosftet turning on then the mostfet got instantly hot (not the CPU)
Removed the faulty mosfet. -> now laptop turns on CPU mildly gets hot but laptop gives the common 5 long 3 short LED error.
Cleaned ME on BIOS but no luck
Tryed original clean BIOS from website by serial number but still 5-3 error led.
All voltage rails are present except GPU.
Any chance that CPU controller is dead or its CPU fail?
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