ASUS K42Jr motherboard short to ground.

[dukefawks]

PQ8301/PQ8304 are probably shorted, remove them. This has probably killed everything on that bus including the CPU and PCH. I'm pretty sure this board is trash.

 

[daxxone]

I put the CPU in another laptop and it worked fine. So I got that going for me. No charger would stay on with this short, and the only, unregulated voltage was 3.3v and, yeah PCH could be dead now. Thanks for the input. I'll post back when I get some progress, or if it is a full dud.

 

[daxxone]

I should have PQ8304 by the end of the week, I had ordered 5 of them when I ordered RT8202APQW. I was thinking the short was in PQ8304 ( there is no PQ8301 on the Rev3 board I have here, some of the odd colored parts of the schematic have changes from the Rev2, to the Rev3, so I do some guessing here and there ) and with it removed, along with PQ8303, PQ8302, should be be at ground at either end of PL8303? Is this a bad PCE8301? I mean, I can't break the inductor, right? Sorry, just thinking out loud. I got to pull that too. The PQ8304 does test bad off the board.

 

[dukefawks]

PQ8304 was shorted so the full 19V got onto the CPU IO VCC bus. PCH is dead for sure, again this board is fried to hell. You can inject 1.5V on the bus and confirm you can burn your finger on the PCH.