3COM OfficeConnect Gigabit Switch 16

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Kingpin!
    New Member
    • Sep 2023
    • 2
    • SWEDEN
    #1

    3COM OfficeConnect Gigabit Switch 16

    3COM OfficeConnect Gigabit Switch 16 (3C1671600)

    The switch has served me for 10+ years (was new when I bought it). It's a nice switch with connections on the back which makes for quite a clean desk. Reason for taking it apart was that the cooling fan was noisy so I expected it to be dirty/dusty inside and the need to order a new fan. What I found was that it was very dirty/dusty and some electrolytic capacitors which needs attention. There are 3 capacitors which needs to be replaced but the ESR on some of the other ones might be bad as well so I think I'll replace them all. Original capacitors are Nichicon. Power supply is 12VDC / 3.5A (positive = centre).

    I've written a list of all the electrolytic capacitors below. Three of them are listed with an asterisk (*) and these ones have bulged on the top (all are 6.3V / 1500uF).

    C2 = 25V / 220uF
    C7 = 25V / 220uF
    C8 = 25 / 1000uF
    C108 = 10V / 1000uF
    C117 = 10V / 1000uF
    C150 = 6.3V / 1500uF *
    C151 = 6.3V / 1500uF *
    C152 = 6.3V / 1500uF *
    C157 = 25V / 1000uF
    C163 = 25V / 220uF
    C168 = 10V / 1000uF
    C188 = 10V / 1000uF

    Regarding the cooling fan, I'll see if it's less noisy after I replace the components otherwise I'll try to find a replacement for that as well.

    Also, there are no screws to detach the plastic top of the switch, just plastic tabs. To detach the PCB from the bottom there are 2 screws available from the inside.

    Hope the list is correct and that it helps someone.
    Tags: None
    • Greybox
      New Member
      • Oct 2024
      • 1
      • USA
      #2
      This is very helpful. Love this switch. Would you recommend a place to buy these Nichicon caps. Did you ended up replacing the fan. THANKS for sharing.

        Comment

        • CapLeaker
          Leaking Member
          • Dec 2014
          • 8020
          • Canada
          #3
          Usually if I do something similar I replace the fans as well and never had the problem of not finding the right fan.

            Comment

            Previous template Next

            Related Topics

            Collapse
            • Document Archive
              Acer Switch Switch V 10 SW5-017P Hybrid (2-in-1) V 10 Specification for Upgrade or Repair
              by Document Archive
              This specification for the Acer Switch Switch V 10 SW5-017P Hybrid (2-in-1) can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Switch V 10 SW5-017P boardview and Switch V 10 SW5-017P schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification,...
              09-06-2024, 05:30 AM
            • Natob82
              Micro Momentary Push Switch?
              by Natob82
              Great to be here! I'm a newbie here trying to find a "micro", momentary push switch to repair a Sony "clamshell" video walkman. This micro switch has long since discontinued by Sony, however I hope there are third-party switches of the same size and functionality that I might be able to source to play the same role. The purpose of this switch is to tell the video walkman that the user has activated the mechanical tape eject button, turning that physical action into an electronic signal that tells the tape transport mechanism to open so one can load or eject a video tape. I...
              12-21-2022, 05:22 AM
            • grimacelord
              NEC TurboExpress On/Off Power Switch Replacement Help
              by grimacelord
              Hello,

              I've been working on a NEC TurboExpress and I accidentally got the plastic inside the power ON/OFF switch too hot while doing other repairs and melted it. At first, it would still power on when sliding the switch, but you had to really press inward while sliding to get it to work.

              I removed the switch component and tried to gently melt the plastic back so it would work more reliably and all I managed to do was make it worse.

              I need to find a replacement On/OFF switch for this, but having some trouble figuring out which kind of switch I need....
              11-09-2023, 09:49 AM
            • SluggerB
              Help making a switch work the opposite way with a relay
              by SluggerB
              I have a very small float switch, I'm using in a very small tank. It only fits in one way. Link https://www.amazon.com/uxcell-Switch.../dp/B07DZ1J2GB

              I want the switch to be open when the water is high, and closed when the water is low. Unfortunately it works the opposite. And since this switch is designed to be underwater, it's all sealed up, there is no taking it apart or hacking it up.

              It will be driving a water pump, basic idea, when the water is low, switch closes, which turns on water pump, when enough water is in the tank, float switch floats,...
              02-07-2025, 07:57 PM
            • Document Archive
              HP EliteDesk 800 G3 + OfficeConnect OC20 2x2 Dual Radio 802.11ac (RW) Access Point EliteDesk 800 i7-7700T Specification for Upgrade or Repair
              by Document Archive
              This specification for the HP EliteDesk 800 G3 + OfficeConnect OC20 2x2 Dual Radio 802.11ac (RW) Access Point can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the EliteDesk 800 G3 + OfficeConnect OC20 2x2 Dual Radio 802.11ac (RW) Access Point boardview and EliteDesk 800 G3 + OfficeConnect OC20 2x2 Dual Radio 802.11ac (RW) Access Point schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information....
              09-12-2024, 02:00 PM
            • Loading...
            • No more items.
            Working...