Badcaps.net Forum
Go Back   Badcaps Forums > Troubleshooting Hardware & Devices and Electronics Theory > Troubleshooting Laptops, Portable, and Mobile Devices
Register FAQ Calendar Search Today's Posts Mark Forums Read

 
Thread Tools Display Modes
Old 04-10-2014, 09:31 AM   #41
Francisco.s
Badcaps Veteran
 
Join Date: Jan 2013
City & State: Alicante
My Country: Spain
I'm a: Knowledge Seeker
Posts: 425
Default Re: Remove liquid inside laptop cpu socket S1 AMD

Quote:
Originally Posted by Dimitrios View Post
Removed northbridge/gpu ATI 216-0752001 RS880 but short remains on +VDDNBP rail. Can anyone confirm that +VDDNBP power rail is the same with +VDDNB on page 38 of schematics that uploaded earlier??

I think that the shorted capacitor must be on page 8, bottom left, one of C42, C43 or C49 but cannot locate those cause there is no numbering on the board for most of the capacitors...
Will try what Atsio mentioned in earlier post.
As you can see, (page 32) +VDDNBP = +VDDNB.

ScreenShot 10.04.14 17-02-21.jpg
Francisco.s is offline   Reply With Quote
Old 04-10-2014, 12:13 PM   #42
Dimitrios
Senior Member
 
Dimitrios's Avatar
 
Join Date: Nov 2013
City & State: Crete
My Country: Greece
Line Voltage: 220VAC 50Hz
I'm a: Student Tech
Posts: 127
Default Re: Remove liquid inside laptop cpu socket S1 AMD

You are right! How did I miss this?? Thought it was the same!

Well I am also getting a short 70 Ohm on 1.1VS voltage L13 and L14 so I guess that it's over... I wish I had a regulated lab voltage supply to inject low voltage. Will do in the future but too many shorted components...
Dimitrios is offline   Reply With Quote
Old 04-11-2014, 12:05 AM   #43
momaka
Badcaps Veteran
 
momaka's Avatar
 
Join Date: May 2008
City & State: VA (NoVA)
My Country: U.S.A.
Line Voltage: 120 VAC, 60 Hz
I'm a: Hobbyist Tech
Posts: 8,983
Default Re: Remove liquid inside laptop cpu socket S1 AMD

Quote:
Originally Posted by Dimitrios View Post
You are right! How did I miss this?? Thought it was the same!

Well I am also getting a short 70 Ohm on 1.1VS voltage L13 and L14 so I guess that it's over... I wish I had a regulated lab voltage supply to inject low voltage. Will do in the future but too many shorted components...
Well, if you are "writting off" the board, you might as well inject some low voltage and see what gives (take out the RAM, CPU, and anything else valuable before trying, of course).

I also thought about making a simple and crude current-controlled source, but I haven't tested it yet. Basically, just a big BJT (TO-220 or bigger) attached to a good-sized heatsink, driven by a potentiometer. Since for BJTs, the C-E current is roughly propertional to the B-E current, you should get pretty decent control of the current, IMO. Like I said, though, I haven't tested it.
momaka is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



Badcaps.net Technical Forums 2003 - 2019
Powered by vBulletin ®
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 11:47 PM.
Did you find this forum helpful?