Asus Model G501j , Board N501jw short at AC_BAT_SYS

[reformatt]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

Why are ASUS boards so shit? They always seem to have these cascade failures across multiple rails.

So you are you saying that PQ8100 was shorted, and the EC is also shorted as well? This potentially means that you've had 19V on the 3V rail.

Could be like Bill Paxton in Aliens.....GAME OVER MAN!

[myth77]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

ITE will not need programming because on asus laptops if you have a new ITE it will be reprogrammed from bios on first start...but you have to have NEW/EMPTY ite chip.
BUT...first remove it and see if short exists on other rails on the board...especially pch...because i have seen two times they go dead in pair on this board...but maybe you are lucky.

[myth77]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

Why are ASUS boards so shit? They always seem to have these cascade failures across multiple rails.

So you are you saying that PQ8100 was shorted, and the EC is also shorted as well? This potentially means that you've had 19V on the 3V rail.

Could be like Bill Paxton in Aliens.....GAME OVER MAN!

yes, that middle pin is very easy to break on this board and then 19v goes directly to ITE...they could have put a diode in between...but yeah...they forget

[TheWizard]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

I had an Asus P6X58D Premium board that crapped out after a year. Ended up fixing that myself because Asus wouldn't do anything about it. But i would never buy another Asus product. I will remove the ITE and let you all know if the short goes away. I don't have high hopes that it will but miracles happen sometimes haha. Thank you all once again for the assistance so far.

[TheWizard]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

Okay removed the ITE. Probed around and still have shorts on 5VS_FANO , 3V_HDD2, 1.5 VSO and 3VS. There are probably more. I was just looking for biggest caps to use as tests. I think its safe to say i remove known good parts from this and scrap it. What do you all think?

[TheWizard]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

P_VCORE_VSP_10 - *Shorted*
1. PC8012
2. PC8055
3. PR8051
4. PSL8006
5. PU8000

CPU must be fried. Thoughts?

[Sephir0th]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

Without EXACT value, a "short" can't be concluded.

[TheWizard]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

Meter in continuity mode. 0 reading and beep on ground side and power rail side of part names tested above. Checked in diode mode and received the same. Anything else you can suggest Sepir0th?

[Sephir0th]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

Meter in continuity mode. 0 reading and beep on ground side and power rail side of part names tested above. Checked in diode mode and received the same. Anything else you can suggest Sepir0th?

Yeah, another reading with Ohms mode, range 200, please.

[reformatt]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

yes, that middle pin is very easy to break on this board and then 19v goes directly to ITE...they could have put a diode in between...but yeah...they forget

I think it's like a lot of designs these days. Any protection devices are now not fitted. It's saves money during manufacturing (may seem only a few bucks, but when you extrapolate that to a few hundred thousand units, it adds up). Other reason is built in obsolescence.

I read something about Steve Jobs the other day about when he first came back to Apple in the 90's. A woman commended him for the continuing support for her then rather old Apple product. A defining moment for Jobs, he said this lady hasn't given Apple any money for years. And the age of built in obsolescence began. Everyone else just sees what Apple does and gets away with, and just follow suit.

[reformatt]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

I think you should check as per @myth77 advice for a shorted PCH, as this is quite common with overvoltage on the +3V rail. Check the +1.05V rail for a short.

You'll notice the bulk of the help requests in the forum at the moment are for either Asus or Acer boards. I think that's a reflection of how bad they are.

[TheWizard]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

Myth77,
Can you provide me the test points for the pch you would like me to check? I was just guessing bu looking at the schematic for pch.

[TheWizard]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

Yeah, another reading with Ohms mode, range 200, please.

Can you provide specific test points for this?

[TheWizard]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

I think you should check as per @myth77 advice for a shorted PCH, as this is quite common with overvoltage on the +3V rail. Check the +1.05V rail for a short.

You'll notice the bulk of the help requests in the forum at the moment are for either Asus or Acer boards. I think that's a reflection of how bad they are.

I will check the 1.05v rail for short while I am waiting for further direction from Myth77. Thanks to you both!

[TheWizard]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

I think it's like a lot of designs these days. Any protection devices are now not fitted. It's saves money during manufacturing (may seem only a few bucks, but when you extrapolate that to a few hundred thousand units, it adds up). Other reason is built in obsolescence.

I read something about Steve Jobs the other day about when he first came back to Apple in the 90's. A woman commended him for the continuing support for her then rather old Apple product. A defining moment for Jobs, he said this lady hasn't given Apple any money for years. And the age of built in obsolescence began. Everyone else just sees what Apple does and gets away with, and just follow suit.

Preach! So true. The quality is just not there anymore.

[Sephir0th]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

Can you provide specific test points for this?

Just any pad of the coil(s) related to VCORE. Since diode measurements are harder to compare, caused by multimeter variations, I prefer Ohms mode

[TheWizard]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

Just any pad of the coil(s) related to VCORE. Since diode measurements are harder to compare, caused by multimeter variations, I prefer Ohms mode

Makes sense. I will try that and report back with status.

Thank you.

[TheWizard]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

Okay just measured Vcore on the 3 coils below.

PL8003 = 29.6 ohms
PL8002 = 29.3 ohms
PL8001 = 29.1 ohms

[Sephir0th]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

Then I don't know where you found the short, but the CPU it is not.

[TheWizard]

Re: Asus Model G501j , Board N501jw short at AC_BAT_SYS

Then I don't know where you found the short, but the CPU it is not.

Going to probe around and check the 1.05v rail like Reformatt suggested. Got side tracked yesterday. Will post results. But the rail i was checking below that i found the short on is posted below. There is a controller chip on that rail. I will be checking that today for restistance to ground.

P_VCORE_VSP_10 - *Shorted*
1. PC8012
2. PC8055
3. PR8051
4. PSL8006
5. PU8000