sony vaio PCG-7141L NO POWER - Page 2

**spintop** · 02-22-2017, 06:30 AM

pq25 1,2,3,4 all at 19.9v
Vgs is 0v, mosfet is not turn on.
my guess could be a faulty mosfet or pc136.
check if pin 4 and 1,2,3 are shorted

**smali** · 02-22-2017, 06:57 AM

check the short circuit with ground with oham range on pq25 drain (5678)...and also remove pc25 and check ?

**Romulo** · 02-22-2017, 11:51 PM

thanks to all the response ill check what you advise and feedback soon

**meritosari** · 02-25-2017, 06:09 PM

Quote:

Originally Posted by cyberhack

Convert a pc power supply to use .
http://makezine.com/projects/compute...upply-adapter/
https://www.youtube.com/watch?v=z2oSFpKh_Uw

Or build DIY PSU bench supply that could controlling output limit of voltage and current.

Our friend Kazia, He already managed to build PSU using PSU2 schema

02-22-2017, 06:30 AM	#21
spintop Senior Member Join Date: Feb 2011 Posts: 103	Re: sony vaio PCG-7141L NO POWER pq25 1,2,3,4 all at 19.9v Vgs is 0v, mosfet is not turn on. my guess could be a faulty mosfet or pc136. check if pin 4 and 1,2,3 are shorted

02-22-2017, 06:57 AM	#22
smali Badcaps Veteran Join Date: Sep 2014 City & State: Mardan My Country: Pakistan I'm a: Knowledge Seeker Posts: 227	Re: sony vaio PCG-7141L NO POWER check the short circuit with ground with oham range on pq25 drain (5678)...and also remove pc25 and check ? Last edited by smali; 02-22-2017 at 07:01 AM..

02-22-2017, 11:51 PM	#23
Romulo Badcaps Veteran Join Date: Nov 2016 City & State: Lucban quezon My Country: Philippines I'm a: Knowledge Seeker Posts: 468	Re: sony vaio PCG-7141L NO POWER thanks to all the response ill check what you advise and feedback soon

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