dell alienware la-l762p

[kjchatman]

does anyone have a schematic for the dell alienware LA-L762p board? The board measuring a direct path to ground on coil pl501. i'm not sure which rail it is or if it is even shorted

[mon2]

direct path to ground

What is the exact resistance? Direct path = 0 ohms = yes a short.

[kjchatman]

it's 0 ohm. shouldn't i know the voltage before i inject?

[mon2]

Not needed but keep your injection voltage @ 1 volt or lower. Then check who is heating up. Hope it is only a cap.

[kjchatman]

i'm not seeing anything heating up at 1 volt. i found a schematic and +5VALWP is the rail

[mon2]

Post and link the schematic in the schematics forum. What is the current draw when you inject this voltage? With 0 ohms to ground, someone is shorted and they will heat up. If needed, increase the current setting of your power supply. A setting of 3A-5A should be ample. Be sure it is not the CPU (ie. remove the heatsink to check).

Perhaps one of the USB loadswitches / Vbus caps are shorted?

[kjchatman]

i found the shorted cap after ramping the voltage and ampage and will post the schematic in the schematic forum

[mon2]

Yours is one of the ideal cases we can all hope for. Bad caps indeed.