Connect with us

Repairing power supply of MOXA Nport5610

Discussion in 'Troubleshooting and Repair' started by TomerG, Jul 2, 2013.

Scroll to continue with content
  1. TomerG

    TomerG

    3
    0
    Jul 2, 2013
    Hi,
    I'm working with this serial to ethernet MOXA.
    After power outage, the MOXA couldn't power up again.
    There is a separate Power supply circuit inside so I checked the power in (220v) is ok, but there is no power out.
    I think maybe the capacitor blown up (two capacitor at the right side)
    attached the circuit picture.

    Can somone tell where can i get a datasheet for it?
    Or does anyone got this problem in the past?
     

    Attached Files:

  2. davenn

    davenn Moderator

    13,785
    1,936
    Sep 5, 2009
    Hi
    welcome to the forums :)

    the output caps often overheat and fail in these switchmode power supplies
    replace both of the ones on the right and chances are it will work

    Dave
     
  3. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,480
    2,827
    Jan 21, 2010
    And you can see that one of the filter caps has started to leak.

    I would second Dave's opinion
     
  4. TomerG

    TomerG

    3
    0
    Jul 2, 2013
    Hi,
    Thanks you very much for the quick answer.
    I will try to replace them and update.
     
  5. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,480
    2,827
    Jan 21, 2010
    Be sure to choose 105C rated low ESR capacitors. Also choose a reputable brand/supplier.
     
  6. TomerG

    TomerG

    3
    0
    Jul 2, 2013
    Hi,
    I've replaced both capacitors at the output and the big capacitor at the input, but still there is no output voltage. maybe it's the stabilizer?

    Another thing, there are two different lines at the output, and both of them connected to the board, why is that? why the board need two different input with the same voltage?
     

    Attached Files:

  7. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,480
    2,827
    Jan 21, 2010
    Either that or the thronomister*.

    That will be to supply the required current.

    Check that the fuse hasn't blown. If it has, then chances are the chopper transistor has failed.

    * A device as nonexistent as "the stabilizer"
     
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.
Electronics Point Logo
Continue to site
Quote of the day

-