Home Forum Hardware Solder failure in wifi module

Viewing 7 posts - 1 through 7 (of 7 total)
  • Author
    Posts
  • #6786
    Moz
    Participant

    The wifi stopped working in 0117 recently, and I had it at work while I located a programmer (on the theory that maybe it was the firmware). Sadly while moving it I dropped it ~30cm onto a hard surface and the wifi module fell off the main board. When I resoldered it everything worked again. I reflowed a few other joints on the board that also looked a bit dry. That suggests that the wifi failure was actually due to the quite poor soldering job from the factory.

    It should be online now (I’m about to take it back home):
    https://www.uradmonitor.com/tools/dashboard-04/?open=82000117

    #6787
    Wolferl
    Moderator

    Hi Moz,

    Nice fix, your unit seems to work great now. Can you post a picture of the soldering area? I’m just curious….

    Cheers,
    Wolferl

    #6791
    Moz
    Participant

    Sadly my phone is awful at this level of macro, but this is after I re-soldered it. I didn’t really look too closely when it was broken because with the module off it was obvious what the problem was. The capacitor next to it looked like slightly dry joints, just not quite enough heat.

    I should have gone round the corner and got Dave@EEVBlog to fix it and make a video. He is the next suburb over.

    Attachments:
    #6793
    Radu
    Keymaster

    hi Moz, congrats on that! Dave helped you with it?

    #6801
    moz0
    Participant

    No, I have very limited surface mount skills but managed to get it done.

    I should have gone to Dave, that way we’d get a video. I will open up 116 and have a look at that too, and if it looks suspect will see what Dave says. The workshop downstairs is all set up for this and there’s a proper microscope that I can get hopefully screenshots out of. I just have to bribe the technician 🙂

    #6802
    moz0
    Participant

    What I should have done was gone downstairs at work and used the proper microscope rather than faffing about at home. Here’s some shots of 116 opened up. Sorry for not thinking of this before I fixed 117 🙁

    I would be more comfortable with just a little more solder on each of the pads that attach the module.

    uRadMonitor 116

    Also, Radu, can you please move 090 into this account or 116+117 into my other account?

    #6853
    Radu
    Keymaster

    hi Moz, The picture doesn’t show , can you please download it and upload it on the forum directly?

    All 3 Units moved to your account (moz@***.***.nz)

Viewing 7 posts - 1 through 7 (of 7 total)
  • You must be logged in to reply to this topic.