Connect with us

Attempting to repair a wifi amp with a suspected power supply issue

Reply to Thread

Discussion in 'Troubleshooting and Repair' started by kneegrow, Jan 12, 2013.

Scroll to continue with content
  1. Jan 12, 2013 #1
    kneegrow

    kneegrow

    12
    0
    Apr 16, 2011
    ]The thing just stopped working after months of faithful operation. lost connection and noticed the power LED was off. I unplugged it immediately and disassembled it. upon plugging the board back in the power inductor and a nearby Cap almost immediately got HOT I suspected the inductor was bad and replaced it with a free sample from the component manufacturer. same issue. any ideas? some of the components I can't identify as I cannot find datasheets for them.

    [​IMG]

    [​IMG]
     

    Attached Files:

    Last edited by a moderator: Jan 12, 2013
  2. Jan 12, 2013 #2
    davenn

    davenn Moderator

    13,560
    1,856
    Sep 5, 2009
    well the inductor wouldnt be getting hot without a reason
    chances are something further down the line is drawing excess current and that extra current through the inductor coil is causing it to heat up

    your pics are a bit blurry to be able to do any serious identification of parts or circuit tracks and without a circuit diag will be difficult to diagnose

    BUT for a start...
    1) SHARP well lit pics of the lower left area of the board, showing the area of the capacitor and inductor and some of the com[ponments to the right of the inductor
    2) show us where the power supply is connected and is this supply ( presumably from a plugpack?) DC or AC

    Dave
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Similar Threads

  1. Attempting to repair

  2. Newbie - attempting to repair Ford circuit board

  3. Soldering issue with car keycard repair!

  4. Matsui 28 DPL power supply issue

  5. Attempting vintage receiver repair - Please Help!

  6. Is this a screen issue or another issue?

  7. laptop power issue

  8. Unresolved issue related to power-in

Loading...
Electronics Point Logo
Continue to site
Quote of the day

“”

-