I have an Acer Aspire 5740g with no power - no lights . Adapter is tested ok , motherboard is getting power 19V from power jack . I've found mosfets getting 19V and U72 (tps51123) pin no 8 getting 1.5 volt instant of 3.3 (if I am not wrong) pin no 17 out 5 volt. I replaced 51123 but still same problem also 51123 get heated Any help please where to look ?
Mb part no is 09285-1m
48.4GD01.01M
Mb part no is 09285-1m
48.4GD01.01M
Comment