Welcome guest, is this your first visit? Click the "Create Account" button now to join.
Page 2 of 2 FirstFirst 12
Results 11 to 12 of 12
  1. #11
    Global Moderator Dead zumo 550...
    Dead zumo 550...Dead zumo 550...
    smokefree's Avatar
    Join Date
    Sep 2010
    @ home
    Rep Power


    I bought a bricked zumo 550 off eBay. The unit was and still is fully dead:

    - No response to the power button
    - No response to an external power source (power net adapter)
    - No response to a USB cable (also not when battery removed)
    - No response to pressing the power button and the '+' button simultaneously
    - No fix after removing and reinserting the battery
    - No fix after briefly shorting the internal battery (see post #8)
    - The replaceable 3.7 V battery has a voltage of 2.6 V (2x)
    - The three battery contacts inside the battery compartment show a voltage of 4.7 and 5.0 V when the unit is connected to an external power source
    - The internal non-replaceable battery (second last picture in post #8) shows good voltage (can't remember anymore exact value and I don't feel like opening up the unit again just to check)

    Any other suggestions besides using the zumo as a paper weight?


    Quote Originally Posted by smokefree View Post
    - The replaceable 3.7 V battery has a voltage of 2.6 V (2x)
    After 24 hrs charging, the battery voltage now reads 3.9 V (2x).
    Tried the "short circuit trick" again, but still no luck.
    Gave me the opportunity to measure the internal battery voltage: 3.1 V.
    Last edited by smokefree; 18th December 2014 at 08:07 PM.

  2.    Advertissements

  3. #12
    Junior Member
    Join Date
    Sep 2015
    British Columbia
    Rep Power

    Default Short circuit trick

    Tried the same, no go - screen still dark.


Page 2 of 2 FirstFirst 12


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
This website uses cookies
We use cookies to store session information to facilitate remembering your login information, to allow you to save website preferences, to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.