Re: Testing VRMs

First You Should Know Where Is Vrm Section On Board And How It Works, Which One Is Positive Line And Negative Line Then Mosfets Of P And N Lines, Check The Voltages, If No Voltages Means May B Mfets Are Open Thn Take Them Out From There Place And Check Also Check On Pads If Still There Shorting Means May Be Another Mosd\fet Has To Take Out From Board And Chk It Like That Go Ahead If U C That Capacitor Is Leak So Fst U Hav To Repalce, And In Ths Case Pwm Ic Of Both Line ( +, _ ) Have To Replace And Chk, Buck Control Ic( For Power Good Signal) , Io All Thing Should...