Page 1 of 1

Lenovo ACLU5 NM-281 Suspended switch remain off

Posted: Thu Oct 20, 2016 12:50 pm
by Arun.shspl
Lenovo motherboard received just on, No display so find suspended supply switch for +1.8VALW to +1.8VS and +0.95VALW to +0.95VS were not switching due to +VSB absence after testing find that +VSB switch is working fine but not reaching to Q39 and Q41 mosfet gates. Finally diagnose the track was open as attached images.

switch Q41.png
Switch Q39.png

IMG_20161020_174435.jpg
IMG_20161020_174447.jpg
IMG_20161020_174502_comment.jpg

Re: Lenovo ACLU5 NM-281 Suspended switch remain off

Posted: Thu Oct 20, 2016 8:39 pm
by hames
thank you sir