#12766 HIGH Opportu: XO-1.75 not charging batteries

Zarro Boogs per Child bugtracker at laptop.org
Fri Apr 25 22:09:54 EDT 2014

#12766: XO-1.75 not charging batteries
           Reporter:  Quozl     |       Owner:  Quozl      
               Type:  task      |      Status:  new        
           Priority:  high      |   Milestone:  Opportunity
          Component:  hardware  |     Version:  1.75-C1    
         Resolution:            |    Keywords:             
        Next_action:  diagnose  |    Verified:  0          
Deployment_affected:  ni        |   Blockedby:             
           Blocking:            |  

Comment(by wad):

 Other possibilities include:

 Inability to communicate between the EC and PU16 (I would think we would
 see error messages, but...)

 Another idea for a repair is to replace the internal VBAT_S DC feedback
 path with an external one (assuming the internal one was damaged by ESD
 ?).   I would suggest trying something like 110K between VBAT_S and
 PU16.8, and 22K between PU16.8 and GND.

Ticket URL: <http://dev.laptop.org/ticket/12766#comment:6>
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