Case study challenge 8/100

📌 Dell 5520 Laptop comes which board is la-8241p in dead condition

📌 Connect with dc supply showing vin shot open and remove board

📌 Chk for physical found pq203 completely burn (image no.1) remove that mosfet and capasitor again vin line showing shot remove its pad and clean totally burning place (image no.2)

📌 Again showing shot when i inject voltage till 1.5 amp on clr sb ic 51125 was heat remove that ic now vin shoting is gone

📌 But now 5valw coil showing low impedance inject 2v on coil some thing heat near usb port its ui2 and ui3 ic remove that shoting was gone now replace all ic and mosfet.

📌 Inject 19v but no changes on dc supply. Chk i/o remove its sticker and found i/o also burn 🤦‍♂🤦‍♂ (image no.4) replace i/o and boom laptop was on and display proper

All credit goes to my schema guru Md.rafi sir who teach us how to work with patience thanks a lot sir

Love you sir 🥰🥰🥰

💥 Wanted Laptop chiplevel engineer in JABALPUR
💥 Contact Mr Khalid on +8085160308

Case study challenge 11/100

Example of think simple and stupid

📌 Hp 15-ac Laptop (c701p) comes in sometime on and sometime dead condition. Customer told me that Laptop if on its working fine and suddenly its off then it won't turn on .

📌 When i chk its condition its working fine and suddenly goes off and its pwr led continue blinks. (Video no 1)

📌 Open just back cover and press power button Laptop on but suddenly goes off. I just remove pwr switch cable then laptop automatically display properly. (Video no.2)

📌 Just i remove its pwr switch pcb and remove lid switch boom Laptop working fine. No need to remove board from base repair Laptop in just 10 min.

📌 It is the example of think simple and stupid which we learn from schema guru Md.Rafi sir .

Thanks a lot sir love you forever 🥰🥰🥰

💥 A perfect case study

💥 Try try you will succeed at last, patience always pay, just force your talent