If the unit is worth saving we replace the mainboard.
I am Using Sony Vaio Model No: VGN-FE45G/M.
in Iam working with my Laptop Suddenly Keyboard failure.
In keyboard Any Keys Cnnot Operate it. So I use Some Days With External Keyboard. Recently Power Off my Laptop. Cannot Power On again. i Try So many Ways to try start. Battery Removed apply D.C adapter power. Nothing Happened. Battery Power Apply and On Again. Nothing Happened. I try Cmos Battery Jack Remove and Pushed again,. Nothing Happened.
No Leds on No Noises, No Beep Sounds, No Screen Blinking.
D.C Adapter Working. Battery Working. Main Board Removed and Applying D.C Adapter . In Conncted D.C. Adapter Jack I check Voltage With Multimeter. It Shows 19.5 Voltage.
IN Main Board is Fault. How to Rectify that. How Can i Find Out Problem in Main Board.???
Main Board Version is MBX 149 (MS 10, Rev 1.1)
(I have Little Bit Experience In Hardware Basics )
PLease Help us.??? what to do??? How to Check voltages components in Main board with multi meter to find out Problem.???