Switching a fan in a PSU.Will i get zapped?

By ---agissi---
Sep 17, 2003
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  1. I've bought this fan thats silent to replace the one in my PSU (going to have a silent computer). The PSU has been turned off (switch on the back of it) and unpluged, for about 15 hours now. I wont be sticking my fingers on the capacitors, but I still dont want my mom to find my dead down here in my room. So is it safe to switch the fans or does it need to be unpluged longer?

    Thx
  2. Nic

    Nic TechSpot Paladin Posts: 1,928

    A few seconds ought to do it. Switch mode PSUs (all computer power supplies) don't store electrical charge, so you've already waited 15 hrs more than you needed to. You can check by sticking your tongue across the 12v line to see if it tastes acidic. :D
  3. ---agissi---

    ---agissi--- TechSpot Paladin Topic Starter Posts: 2,382   +15

    lmao, instant responce :D thx Nic, hope your right
  4. Phantasm66

    Phantasm66 Newcomer, in training Posts: 6,504

    LMAO!!! ;)

    I think ---agissi--- should do it, and then post back and tell us what happens.
  5. poertner_1274

    poertner_1274 secroF laicepS topShceT Posts: 4,745

    That is only of course if he is able :)


    Agissi you shouldn't have a problem as others have said, just make sure it is unplugged.
  6. XtR-X

    XtR-X Newcomer, in training Posts: 1,040

    I was planning on doing this also. I want to change my fans in my PSU to LED fans, for the lighting effect in my case, and perhaps a PSU mod if I want.

    So do you guys have any pointers on this...? Like something I should definately avoid when in there or something I should make sure of etc...?
  7. Phantasm66

    Phantasm66 Newcomer, in training Posts: 6,504

    erm.. doing it with the power on? ;)
  8. ---agissi---

    ---agissi--- TechSpot Paladin Topic Starter Posts: 2,382   +15

    Well for me, it works but not too well. The 2pin connecter the PSU takes, and the one that the fan came with slightly differed, to the point where I couldnt get the fan to plug into the PSU. So I hooked it up with a 3pin connecter. The fans wires/cable is running outside of the PSU, into one of the mobo 3pin fan jacks. Only bad thing is, the fans 3pin wires wernt long enough. So I ended up taking another 3pin wire, stripping it, and making an extension :D Only thing is, the extension is just kinda holding together. Theres no tape or soldier holding it together, so I dunno how this will go since I go to lans frequently.
  9. Nic

    Nic TechSpot Paladin Posts: 1,928

    At least you can now easily get your tongue in to test your psu. :D

    Maybe you can cut the 2-pin connector from your old fan and splice it onto your new fan. Only the black and red wires are required as you won't need the speed sensing third wire.
  10. ---agissi---

    ---agissi--- TechSpot Paladin Topic Starter Posts: 2,382   +15

    Thanks for the suggestion nic, but I think I'll just nap a 3 to 4 pin connecter from a friend ;)
  11. Nic

    Nic TechSpot Paladin Posts: 1,928

    I thought you said it was 2-pin. Anyway, I'm sure you know what you want.
  12. XtR-X

    XtR-X Newcomer, in training Posts: 1,040

    If it was my situation, agisii, I would have cut off the wires at a certain point and sauder the new fan to it then tape it together or get one of those joint thingys and pinch it.
  13. ---agissi---

    ---agissi--- TechSpot Paladin Topic Starter Posts: 2,382   +15

    rotf yea, but I didnt want to get my dad to bring home the saudering iron.

    it was a 2pin, but from the fan, it came with these connectors, to take the 2pin off the fan and make it a 3pin. Its kinda weird, never seen a fan like it before.
     
  14. XtR-X

    XtR-X Newcomer, in training Posts: 1,040

    You don't need to use a sauder. I wish I could have the time to look up what you needed and showed you a picture but I just started this reply and have to go.

    It's basically a little thing, you stick one wire in one end, and another wire in the other end, and you pinch it tight with pliers, the wires stay put, and they still have conductivity.
  15. Rick

    Rick TechSpot Staff Posts: 6,304   +52 Staff Member

    Changing the fan is usually a pretty simple matter. Some PSUs may use a proprietary or odd connector on their fan that could be hard to find. You will probably want to open it up and look at it first and see what kind of connector it takes.

    You won't get zapped just from opening the PSU, but if you don't feel comfortable doing it - Then don't.
  16. Nodsu

    Nodsu Newcomer, in training Posts: 9,431

    Solder maybe?
  17. young&wild

    young&wild TechSpot Chancellor Posts: 1,268

    My friends and I have tried opening up a PSU last year...nothing happens we all are still alive. Shouldn't be a problem.
  18. ---agissi---

    ---agissi--- TechSpot Paladin Topic Starter Posts: 2,382   +15

    yea I switched the fans and had no problem.
  19. XtR-X

    XtR-X Newcomer, in training Posts: 1,040

    Soldering is saudering, as far as I know.
  20. StormBringer

    StormBringer Newcomer, in training Posts: 2,871

    Sauder is not a word as far as I can tell. Solder I know well, but never heard of sauder
  21. ---agissi---

    ---agissi--- TechSpot Paladin Topic Starter Posts: 2,382   +15

    You say soldier I say sauder, its all the same ;)

    (not really, i saw solder)
  22. Nic

    Nic TechSpot Paladin Posts: 1,928

    Lets call the whole thing off ... :=).
  23. poertner_1274

    poertner_1274 secroF laicepS topShceT Posts: 4,745

    you say To-may-to I say To-mah-to (tomato)

    Thread is now closed.
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