Technical Support HP DV6000 Won't turn on

[williams84]

Hi , I have this MB da0at3mb8f0 that won't turn on.
I had a short on inductor 3,3v near cpu and I injected there 3,3v . Then a capacitor 330 on other side of board heated and burn.
I replace this and short is diseappered on inductor but mb won't turn on. The light on connector is blu.

 

[Hosein Asadolahi]

Hi , I have this MB da0at3mb8f0 that won't turn on.
I had a short on inductor 3,3v near cpu and I injected there 3,3v . Then a capacitor 330 on other side of board heated and burn.
I replace this and short is diseappered on inductor but mb won't turn on. The light on connector is blu.

you must say which inductor and capacitor , with pcb number . i cant help you with this information .

 

[williams84]

This is video when I tried. After I Will post pics.

 

[Hosein Asadolahi]

This is video when I tried. After I Will post pics.

you f*ked up on all of cpu pwm circuit by doing this
in which learning article you learned this ?? plz shift delete that document .
you inject 3.3 v to out put of cpu pwm circuit that must be 1v , why ?
now , you must replace all of components of cpu pwm circuit like ic controler , musfets and capacitors .
that cap burn because you voltage is to high and maybe one of mosfet have a problem .

 

[williams84]

Sorry... Can I inject only 1V?
I don’t know...

 

[Hosein Asadolahi]

Sorry... Can I inject only 1V?
I don’t know...

yes , you must inject correct voltage to any pwm circuit . ex : when the pwm circuit have 5v output when you want inject voltage you must inject 5v to that not more than voltage . this pwm is cpu vcore . so you must inject 1v to output of pwm circuit for testing the components .

 

[williams84]

Ok thanks a lot