Connect with us

Surface-mount aluminum electrolytic capacitor codes/identification

Discussion in 'Electronic Repair' started by Bryan Sembello, Aug 12, 2004.

Scroll to continue with content
  1. I'm working on a computer motherboard that has suddenly decided not to
    power up/initialize. Originally it began powering on and sitting
    there not doing much of anything, but now it stops sending the power
    signal to the PSU as soon as it is powered on, and clicks back off.
    The board has many surface-mount electrolytic capacitors, some of
    which are bulging a bit on the top, and I'm thinking this may be the
    cause of the problem. There are no through-hole mounted capacitors.
    I'm going to try to replace them.

    The problem is that I don't understand the codes on the capacitors and
    am not sure which values to use when replacing them. I have tried
    conversion charts on the Web, but I'm not sure whether the first
    number is the value or the second number is. Hopefully someone can
    translate them for me...
    11 of them have the following (exactly) stamped upon them:

    h3
    47
    16V

    3 of them have the following stamped:

    14
    100
    6V

    BTW, if it helps, this is the motherboard out of an Apple Macintosh
    Performa 6400/200 ("Alchemy"-based motherboard).

    Thank you!
     
  2. Ross Herbert

    Ross Herbert Guest

    On 12 Aug 2004 10:59:26 -0700, (Bryan Sembello)
    wrote:

    |I'm working on a computer motherboard that has suddenly decided not to
    |power up/initialize. Originally it began powering on and sitting
    |there not doing much of anything, but now it stops sending the power
    |signal to the PSU as soon as it is powered on, and clicks back off.
    |The board has many surface-mount electrolytic capacitors, some of
    |which are bulging a bit on the top, and I'm thinking this may be the
    |cause of the problem. There are no through-hole mounted capacitors.
    |I'm going to try to replace them.
    |
    |The problem is that I don't understand the codes on the capacitors and
    |am not sure which values to use when replacing them. I have tried
    |conversion charts on the Web, but I'm not sure whether the first
    |number is the value or the second number is. Hopefully someone can
    |translate them for me...
    |11 of them have the following (exactly) stamped upon them:
    |
    |h3
    |47
    |16V

    47uF. 16V

    |
    |3 of them have the following stamped:
    |
    |14
    |100
    |6V

    100uF, 6V
    |
    |BTW, if it helps, this is the motherboard out of an Apple Macintosh
    |Performa 6400/200 ("Alchemy"-based motherboard).
    |
    |Thank you!
     
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

-