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HP 440 G4 PART NUMBER DA0X81MB6E0 REV E NO power 💥DC reading 17-4(stuck in 4) 💥Pressing power button but nothing happened 💥Checking board all clear all COIL value okay 💥 Heat in oven but nothing happened Now try FITC tools 11th version for updating BIOS (as rules as bios DVD) 💥Wow DC READING 23-17-16-7-13-14 AUTO POWER ON AND DISPLAY SHOWING IN PENDRIVE..ITS MY GREAT WORK... It's BIOS DVD POWER MAKE ME OVER POWERED THANKS TO RAFI SIR

Case Study-36 Dell Inspiron 3501 i3-11th Gen LA-K034P Rev 1.0 Dc Reading is0.035-50 Open Laptop check No Corrosion Neat and Clean Board Check RTC it is Ok Remove Board and Check impadance PL301 is Low Check carefully PU301 AWV(SY8286B) leg was Slightly Burn remove And Repair That Burning Track And Replace ic Before Check This Also remove the DC To Dc Ic for Protection then Check in 30 milliseconds Dc Reading in 3 digits also Short check dc to dc ic input 3v leg impadance it was low doubts on iO controller it was MEC1515-NB Remove it And now impadance was high Order The New io and Fix it After fixing all ics Plug the dc Machine Start it fan Running Fast So i Was Leav it because it was programming new io controller In this board 2 bios 8 and 16 mb Then after 45 minutes and 2-3 restart laptop is Shut down and now i turn on Boom💥 Display Was Come Now 2nd Problem When laptop is Off Condition it Charging is Normally but when i turn on and plug the adaptor adaptor light is shorting same on DC Machine Open again and Check When battery and Adaptor Connect Pqb11 and Pqb12 was heating Pqb12 replace with same Number but PQB11 is B04N03 it was 30v and 70A N-Channel Mosfet Then i had replace with AON6554 It is 30v 85A N-Channel Mosfet Now Laptop Charging Normally and Working Fine Thanks To Md.Rafi Sir for Giving us Confidance For Practical Thank you 💕 Fahim Bhai and AFS Solution Banglore its DVD Magic

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Case study #02 Sony MBX-223 Problem : No power on Firstly I disassembled the board and do physical check found corrosion, dust, I removed all corrosion and rust from the board. Now I put dc jack ampere is 0.010 but the board is not triggering and after some time ampere drops to 0.005,but S.B voltages generating on 0.010ampere and droping at 0.005ampere .. Now I think of Bios, I did so many bioses for EC and PCH, But no results.... Now I think of checking IO requirements, while checking IO requirements I found that SUS ON is not present on IO, so i back traced for slp_s4, slp_s5 found that all were absent, but s.b voltages are coming and going back, I changed the Filtering capacitors also.. Now finnaly i got a clue from S.B ic that always power good going to IO from S.B ic is missing on IO.. So i came to S.B IC found that one pull up voltage is present on resistor to give always power good to IO, that resistor was faulty, I replaced with new one case solved.... Thank you Rafi sir and supporting grp members for giving me courage to solve this kind of problems... 😊

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