I need help for my dell not turn on...

[arber1232]

Hello everyone, today I need your help. I have a dell inspiron laptop 3521 La-9104P .. I opened the laptop and I saw that it had made mass 19v with gnd and burn the place .. the laptop does not turn on I measured some voltages in this chip and I have present (Vin = 19v, Gnd, Vreg 5 = 3.5 v ... Vreg 3 = 4.0 v) and I see I am missing + 3v ALWP and +5 v ALWP .. Please can you help me

[emestee]

Re: I need help for my dell not turn on...

This isnt enough. First you need to replace all the burned components (should not power the board before it), then do all measures for resistances on all power rails, and then repair what comes next.

[arber1232]

Re: I need help for my dell not turn on...

This isnt enough. First you need to replace all the burned components (should not power the board before it), then do all measures for resistances on all power rails, and then repair what comes next.

the burned is in this chip in tps 51125 pin 14 15.. vin and gnd

[emestee]

Re: I need help for my dell not turn on...

Replace it then.

[arber1232]

Re: I need help for my dell not turn on...

Replace it then.

i replace and is a same problem

[emestee]

Re: I need help for my dell not turn on...

i replace and is a same problem

Then test rail resistances, and start looking into the elements around the chip you replaced.