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

    13,991
    2,018
    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. Issue with new Altronix SAV9D Power Supply

  4. Soldering issue with car keycard repair!

  5. Matsui 28 DPL power supply issue

  6. Attempting vintage receiver repair - Please Help!

  7. Is this a screen issue or another issue?

  8. laptop power issue

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

“”

-