inspiron 15 dead .

[mo000]

hi everyone
dell inspiron 15
Iris BSW MB 14279-1 PWB:896X3 REV:A00
completely dead no led nothing
3v on pwbtn ok
3v and 5v ok
plug the charger no power led
press the power button nothing happen and power supply shows no power consumption .
i change the charger with original the same thing .
where is the problem ?

[mcplslg123]

Re: inspiron 15 dead .

Offline consumption on DC supply?? Voltage on Dc-IN mosfets D-S-G?

[sopik78]

Re: inspiron 15 dead .

While he can read +3V and +5V I guess DC-In mosfets should have correct voltages.

Is this your schematic?

[mcplslg123]

Re: inspiron 15 dead .

While he can read +3V and +5V I guess DC-In mosfets should have correct voltages.

Is this your schematic?

Not necessarily. You may have 5v/3v as 2nd dc in mosfet may pass on +19V on diode mode and may have gate bias missing. has faced such issue on HP 6th gen mb.