Problem - With in 10-15 mins Laptop shutdown
Clue - Display comes at 0.640 amp
👉 Open and clean the fan and heatink, put new cooling paste and check - but same
👉 Check components for any heat using infrared thermometer, found PL14 (+vcc_core) coil is excessively heating
Little nervous 😟
👉 Start remove components 1 by 1
remove PC78 & PQ13 but same , put PQ13 back
Replace - PCZ42
Display comes at 0.550 amp (amp decreased) But still PL14 was heating
Replace PL14
💥 Heating issue - cleared
Display comes at 0.460 amp and laptop continue on (shutdown problem solved)
Next day morning
Problem no.2 - Laptop Dead
After triggering amp goes 0.077 and come back to 0.008 (ac led glows)
👉 Check all coil impedance, found
PL8 (+5v alw) low impedance &
Pc40 (+3v alw) damaged
CMOS socket also little bit damaged
👉 Replace both standby output capasitor - but +5v impedance same
👉 Remove PJP3 jumper , now jumper's output and input side impedance ok
👉 Problem in jumper solder, so resold it and check.
💥 Board on and Display ok
Problem no. 3
Laptop Hang in both Bios and hdd boot
Start isolation all connection but found problem in motherboard
👉 Add PC118 ( 19v purification which is connected to upper mosfet ) but same
👉 Again replace PL14 & PCZ42 but same
👉 Replace Bios chip and programmed a new file
💥 Hanging issue - cleared
Problem no - 4
Late Display
Before solve this issue, 1st I go for OS installation after OS complete
Open bios chip , cleaned ME using MEinject
💥 Display comes with in 4 sec at 0.260 amp
Now laptop was completely in Good condition
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