IndiaReFix - Laptop & TV Repair Forum

Description: Dell Insprion 15 3521 Laptop On But no display Ram Replace and other removable part replace but no display change bios chip display coming
Manufacture: Dell
Model: Insprion 15 3521
Motherboard Part No: VAW00 LA-9104P REV-1.0(A00)
Motherboard Schematics: Click Here
Processor Type: I3 INBUILT (SR0N9)
Ram Type: DDR3
Keyboard Controller Type: ENE KB9012QF A3 (Programmable IC)
Firmware: Click here for bios
Problem: No Display
Diagnosis: Bios Chip Faulty
Process:
Dell Laptop Insprion 15 3521 on but no display all removable part remove and ram replace but no display after open system found motherboard VAW00 LA-9104P REV-1.0(A00) With ATI Graphics(AMD 216-083300) . completely checking and found damage near PCH(SLJ8E)After replace cap. Checking voltage and found missing voltage VCC_GFXCORE (PL700) Change PU700 (SL95833HRTZ) but not generating PL700 voltage then Reprogram Bios Chip UH2(2MBSPI Rom)/ UH6 (4MB SPI ROM)/ UE1(128KB I/O Chip) But not coming Voltage then Rebolling / Change UV1(AMD 216-083300) But Same Problem then replace UH6 generate PL700 Voltage . (UH6 is 4MB SPI flash IC) after Program and replace UH6 display coming and laptop work fine

Follow US
http://www.indiarefix.com : DHIRENDRA GAUR
http://www.facebook.com/dhirendrsah
http://www.twitter.com/dhirendrsah

very very nice post ..thanks for give your best time......sir how to use dso upload a post how to use dso and work

Good job sir...

[ Post made via Android ]

GREAT POST

GREAT POST

ohooo too many work and good result sir jeee

Nice Sharing sir

nice sir

good tutorial
but sir how uh6 (main flash bios) relate with pu700

esmat-fadak wrote:good tutorial
but sir how uh6 (main flash bios) relate with pu700

found missing voltage VCC_GFXCORE then change PU700 but not coming voltage PL700 then flash uh6