My laptop acer aspire 5720zg dead (no power and lights)

[stingerchamp]

Re: My laptop acer aspire 5720zg dead (no power and lights)

It depends

3.3 volt required for KBC

If KBC is not getting voltage
It will not work
and no any signals will generate

3.3 volt required for power button

3.3 required for rtc section

3.3 required for battery connector pins

Check 3.3 voltage on power button and KBC is getting 3v ldo or not

Check 3.3 ldo is generated at 3v ic

If not

Check voltage in diode mode and ohm to ground in ohm mode at coil in cold state