LENOVO Shorted +5VALW AND +3VALW LINE ACLU9/ACLU0 NM-A311

[kalilinux25]

Hi good day to all hope someone can give me some advice whats happening to this board.

Ive check the output voltage line of +5valw and +3valw all shorted I thought I was having a SIO shorted to.
I try to remove the SIO chip But still shorted I tried to check all CAPS of the pu401 and PU402 all ok

SHORTED TO GROUND

PL402 AND PL401 , i tried also to remove the 2 coils and test the PJ402 and PJ406 im having short at those sections,

I hope someone can guide me if anyone, Thank You in advance

[mcplslg123]

Re: LENOVO Shorted +5VALW AND +3VALW LINE ACLU9/ACLU0 NM-A311

How will any one help remotely on removing short? The rules are simple-inject 1V,1A on the shorted side of jumper and gradually increase the amp. Findout what is heating up and remove the shorted components. First do your job and then if problem persists, we'll look into it.

[kalilinux25]

Re: LENOVO Shorted +5VALW AND +3VALW LINE ACLU9/ACLU0 NM-A311

How will any one help remotely on removing short? The rules are simple-inject 1V,1A on the shorted side of jumper and gradually increase the amp. Findout what is heating up and remove the shorted components. First do your job and then if problem persists, we'll look into it.

I forget to add I already tried sir it nothing getting hot the wire of my psu only get hot.

[sopik78]

Re: LENOVO Shorted +5VALW AND +3VALW LINE ACLU9/ACLU0 NM-A311

I had many of the NM-A311 with shorted CPU on +3VALW, so you should check it as well.

[kalilinux25]

Re: LENOVO Shorted +5VALW AND +3VALW LINE ACLU9/ACLU0 NM-A311

I had many of the NM-A311 with shorted CPU on +3VALW, so you should check it as well.

how to checku if cou is shorted sir?

[SMDFlea]

Re: LENOVO Shorted +5VALW AND +3VALW LINE ACLU9/ACLU0 NM-A311

I forget to add I already tried sir it nothing getting hot the wire of my psu only get hot.

Use a thicker gauge of wire then see what gets hot !