Forwarded from Srinivash Rao
Case study
Hp 15-ac (LA-C701P)
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
Thanks to 🙏🙏🙏
💥Rafi Guruji and AFS practical dvds
( Note : all impedance observation for display is without screen )
Hp 15-ac (LA-C701P)
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
Thanks to 🙏🙏🙏
💥Rafi Guruji and AFS practical dvds
( Note : all impedance observation for display is without screen )
Srinivash Rao
Case study Hp 15-ac (LA-C701P) 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…
💥 Beautiful case study posted by AFS STUDENT
💥 All members can join this channels to Download videos
💥 Website registration compulsory.
💥 Module 1 :
https://t.me/joinchat/TLek8s9Gqeo9QDsN
💥 Module 2:
https://t.me/joinchat/VPl2E0C1GaFQ3kQs
💥 Module 3:
https://t.me/joinchat/S8zg3vyvYeWyU7VY
💥 Module 4:
https://t.me/joinchat/WTRFM3pYDKSjXZpA
💥 Module 5,6,7,8,9,10:
https://t.me/joinchat/xGFeGEZLxjw3MmRl
💥 All are requested to send machine id in website & you will get password in website
💥 👆These links are for only to download videos..
💥 Website registration compulsory.
💥 Module 1 :
https://t.me/joinchat/TLek8s9Gqeo9QDsN
💥 Module 2:
https://t.me/joinchat/VPl2E0C1GaFQ3kQs
💥 Module 3:
https://t.me/joinchat/S8zg3vyvYeWyU7VY
💥 Module 4:
https://t.me/joinchat/WTRFM3pYDKSjXZpA
💥 Module 5,6,7,8,9,10:
https://t.me/joinchat/xGFeGEZLxjw3MmRl
💥 All are requested to send machine id in website & you will get password in website
💥 👆These links are for only to download videos..
Telegram
AFS MODULE 01 HINDI
AFS SOLUTIONS BANGALORE