Announcement

Collapse
No announcement yet.

AC Adapter: blown capacitor, possible replacements

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    AC Adapter: blown capacitor, possible replacements

    Hi folks,

    I'm repairing this old AC adapter and noticed it had a leaked cap, removed it, cleaned the surface (very nasty smelling) and now I'm trying to look for a replacement, but the values aren't quite standard or at least I don't have them readily available.

    Any suggestions or guidance? I like learning about this.
    Is there any chance to use a capacitor with a different value?

    Capacitor info:
    68uF 35V

    Size:
    20 mm tall
    11,4 mm wide

    I included some pictures. It seems the traces involving this capacitor had it's plastic covering eroded (I finished it by cleaning it with isopropyl alcohol).
    There's a trace that goes between what it seems to me two resistors that's also corroded.
    And then there's these two capacitors which I didn't remove at all because they look OK, but maybe they are compromised too.

    FWIW the AC adapter should have an output DC voltage of 18,5V and 2.2A.

    Any suggestion would be greatly appreciated.
    Attached Files
    Last edited by rattlesnake; 02-17-2021, 07:48 PM.

    #2
    Re: AC Adapter: blown capacitor, possible replacements

    that's a standard part.
    use something like panasonic FR or rubycon ZL series.

    and it's not 11mm wide - not from that photo - more like 6.3 or 8mm

    Comment


      #3
      Re: AC Adapter: blown capacitor, possible replacements

      You're right, my caliper was uncalibrated.
      real measures:

      6.3 mm wide
      14.8 mm tall

      Comment


        #4
        Re: AC Adapter: blown capacitor, possible replacements

        Those are nearly 28 years old! The ROHS-compliant version of Nichicon's PL series is its PM series, which is still in production. I don't know what's reasonably available to you, but Nichicon's PJ and PW series would be fairly similar in performance and are more modern. Nippon Chemicon's LXV, LXY, and LXZ series would also be similar.
        PeteS in CA

        Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
        ****************************
        To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
        ****************************

        Comment

        Working...
        X