Technical Support Asus R558U no power

[biling]

Hi, I 've got Asus R558U with no power , not turned on. It would be great if you can find the schematic for me. Also in the attached photo, I have the 19V at the red dot but 0 on the opposit side. Coudl it be the problem of mosfets or capacitor. Thanks in advance.

 

[Hosein Asadolahi]

Hi, I 've got Asus R558U with no power , not turned on. It would be great if you can find the schematic for me. Also in the attached photo, I have the 19V at the red dot but 0 on the opposit side. Coudl it be the problem of mosfets or capacitor. Thanks in advance.

asus platform haven't schematic file . i suggest you watch the video in dr bios site that solve the problem on b+ voltage . i guess motherboard have problem on b+ voltage . you can find problem with inject 1 volt to b+ line and check all component to find over temp

 

[biling]

Hi, I 've removed those 2 shorted MOSFET and checked other component ,there are so many shorted capacitor all around. I removed it and checked it one by one they all are good but there are still shorted on the board so i put it back. Then i injected 19v into the drain of the second MOSFET and it turns on with graphic display. There is no heat produced in anywhere so now i don't know how to check further, please advise. (PS i did tried changed the MOSFET but it did not turned on. so confusing..

 

[Hosein Asadolahi]

Hi, I 've removed those 2 shorted MOSFET and checked other component ,there are so many shorted capacitor all around. I removed it and checked it one by one they all are good but there are still shorted on the board so i put it back. Then i injected 19v into the drain of the second MOSFET and it turns on with graphic display. There is no heat produced in anywhere so now i don't know how to check further, please advise. (PS i did tried changed the MOSFET but it did not turned on. so confusing..

if you inject 19v to b+ line and laptop is turn on correctly , you must check ic charge and input musfet .

 

[Lindu]

asus platform haven't schematic file . i suggest you watch the video in dr bios site that solve the problem on b+ voltage . i guess motherboard have problem on b+ voltage . you can find problem with inject 1 volt to b+ line and check all component to find over temp

Pls where can I find the video b+voltage in Dr bios because I have run over the videos but didn't find thanks

 

[Hosein Asadolahi]

Pls where can I find the video b+voltage in Dr bios because I have run over the videos but didn't find thanks

ex:
How to Repair Laptop Lenovo B590-Solve B+ short circuit

 

[biling]

Thank you very much.