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Dell inspiron 3148 Mb part no= 13321-1 Problem = not power on and also no 3.3v/5v generate. Some other engineer Chage 3.3v/5v (51225) ic and also reprogrammed the bios. First checked vin at clr is OK. Check coil value also OK. Then check the 3.3v/5v ic requirements. Vin OK , vreg3 and vreg5 also ok. Then check en1 for 5v not present but en2 for 3.3v is present. But no output at 3.3v coil. Then check also io s5_en is 3.3v present. Check en1 impedence is 350 OK. But no voltage here. I am totally confused. Then take some presences and just remember practical workshop. Idea come in mind. 30 mili second Ka fanda. 3.3v/5v is generate but go back. Then check DC to DC and found 5v_s0 at pin no 14 is shot. So pull out the ic and check 3.3/5v is now OK. Then give 3v to pin no 14 line and found one capacitor is heated. So pull out this and my job is done. Display also come. Thanks to Rafi sir for give me knowledge that how to repair a board. My confidence is growing.

💥 30 milli second is new invention done by AFS SOLUTIONS.. 💥 in 30 milli second you can find whether *the board is short, *repairable *or dead.. 💥 No need to waste time, 💥 Exact the dc reading will tell which section to work or return for non repairable.. 💥 No gadgets or DSO required, it needs 30 milli second patience & practice, talent not for sale, only you can win from AFS SOLUTIONS.. 💥 INSHAH ALLAH ill teach my NIGERIAN BROTHERS..

Samsung m/b SCALA3-15/17CRV DC JACK Canact Show 0.002 check 19 volt Not pass change 1 mosfat voltage Not Pass change Mosfat Laptop on but No Display Program Bios job don

Hp 15a last-c701p Problem- dead Standby section OK 5v aur 3v OK DC jack light not glow Ene q9022 programing io laga tha to socha io programer nahi hai yes board hamse nahi ho payega bios flash kar Ke dekh liya nahi hua to Maine io.ki reqairment check kiya to pin no 37 par ecrst 3 v nahi ban raha tha back trace kiya to ecrst line me ek capister likage tha nikal diya iske bad adopter Latasha ecrst bhi ban gaya aur DC jack light bhi glow ho gaya board on ho gaya display bhi a gaya thanks sir ji

Acer ka laptop tha dim display a raha tha to same ic nahi to is jugad se led glow kara diya case OK ho gaya

Model:sony Z50CR MB S1202-2 Problem: No SB Voltage and SB Ic OverHeating.. Case Study:: 💥checked all the components connected to SB Ic all are ok.. 💥FIRST MISTAKE without checking SB IC requirement blindly replaced new ic..problem remained same..so wasted 200 rs.. 💥 After that removed both coils of SB SECTION and checked for any short.. no use..problem remained same 💥FINALLY with guidelines of AFS BRAND AMBASSADOR AND THE HELP OF AFS DVD checked the SB IC Requiments LDO 3v was missing wich is Comming from I/O controller.. FINALLY changed the I/O CASE DONE..🤘🤘🤘 Thank you 💥MD RAFI SIRR FOR DVD 💥THE JALU PAWAR FOR SUPPORT

Dell inspiron 3521 LA-9104P Problem - no display and give 4beep First done bios but same issue. As per Dell 4beep given for memory failure. So I check with another ram but same issue. Then check Ram voltage 1.5v and. 75v OK. That's mean ram and CPU communication not happen. 1.5v also goes to cpu for ram communication. In schematic +1.5v is converted +1.5v_cpu_vddq after passing a mosfet qc3. At drain 1.5v is present but at source 0.35v found. Check gate voltage 3.6v but their need 9v to 30v. In schematic I found a voltage divider and the voltage of gate is 15.38v. Check both resistor and found 2mohm resistor is faulty. So change the resistor and power on the laptop and boom. Display come no 4beep. Thanks to Rafi sir for teaching me.

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💥 AFS SOLUTIONS STUDENT, Durgaprasad mondal solved his case study with 30 milli second trick

Watch "LAPTOP CHIPLEVEL REPAIR ENGLISH DVD FEEDBACK" on YouTube https://youtu.be/6YCUJbd6H3Q

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