i am new to electronics this is my first experience fixing dead laptop
i am dealing with compaq parsari cq62 dead motherboard with power issue.
My motherboard is daoax3mb6c2 rev:c I have attached the schematic I am using
this board is completely dead I mean no light no fan running and
adapter indicator also won’t turn on when I plug the ac adaptor but when I check
connector(cn16) pin no 7 and 8 both pin have 5volts on page no 25.
And I get 19volt on pin no 2 and 3 of upper mosfet PQ47 and 27.4 volt on pin no 1(page no 25)
0 volt on pin no 1 and 2 of lower mosfet PQ51 and 27.4 volt on pin no 3(page no 25)
But my always on 5volt and 3 volts are there on pl8 and pl4 (page no 26)
I have checked my power button connector also all pins give the same voltage shown in schematics but
When I press power button nothing happens I tried shorting the short pad (page no 23) but nothing happens. I don’t know where to check else please someone show me the guide line where to check.
i am dealing with compaq parsari cq62 dead motherboard with power issue.
My motherboard is daoax3mb6c2 rev:c I have attached the schematic I am using
this board is completely dead I mean no light no fan running and
adapter indicator also won’t turn on when I plug the ac adaptor but when I check
connector(cn16) pin no 7 and 8 both pin have 5volts on page no 25.
And I get 19volt on pin no 2 and 3 of upper mosfet PQ47 and 27.4 volt on pin no 1(page no 25)
0 volt on pin no 1 and 2 of lower mosfet PQ51 and 27.4 volt on pin no 3(page no 25)
But my always on 5volt and 3 volts are there on pl8 and pl4 (page no 26)
I have checked my power button connector also all pins give the same voltage shown in schematics but
When I press power button nothing happens I tried shorting the short pad (page no 23) but nothing happens. I don’t know where to check else please someone show me the guide line where to check.
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