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Power off to drain capacitors?

Discussion in 'Hardware' started by neilvonhof, Feb 15, 2007.

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  1. neilvonhof

    neilvonhof Thread Starter

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    I read recently (can't remember where now) that is was good practice to occasionally:
    1. Shut down the computer (Start, shutdown, etc,)
    2. Turn off the power switch on the power supply (on the back near the power cord)
    3. Then depress the on/off switch on the front.
    This supposedly drains the power out of the the capacitors and/or whatever else on the mother board might be applicable, which is a good thing to do. I have done it a few times - when the front on/off switch is depressed there is a flash of the light on the front panel once, further pushes of the on/off switch do nothing, implying that there is a drain of power of some kind.
    Ever heard of this? Is it good? Could it be bad? Does it matter?

    Intel Core 2 Duo, XP Media Center 2005, Dual 350GB Matxtor HD's, 2 GB DDR2 Ram

    Thanks in advance for any information on this.

    Neil Vonhof
    Seattle
     
  2. bonk

    bonk Banned

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    Howdy,

    Did it say in this information you found Why is was suppose to be good?
     
  3. neilvonhof

    neilvonhof Thread Starter

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    Yes, supposed to be good, but why, I can't remember. Either as a regualr maintenance proceedure or to fix some sort of problem.
     
  4. bonk

    bonk Banned

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    I have heard about it to attempt to fix a problem but never as a regular maintenance operation
     
  5. crjdriver

    crjdriver Moderator

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    The only reason to do this would be to fully discharge the power supply before opening it to change the fan. Other than that, I really see no use for the procedure.
     
  6. bigbear

    bigbear

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    I always adopt this procedure when working inside the case just to get rid of any risidual power.
    It is possilbe to cause a short, thereby damaging internal componants ( so I have been taught)
     
  7. Rich-M

    Rich-M

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    I agree and do the same thing myself.
     
  8. rbrager

    rbrager

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    I power down every night. I sometimes do a restart to clear logic problems most frequently when the computer does something strange. The only hardware I power down and have a cup of coffee in my Motorola modem. It takes several minutes for it to reset. The routers a minute or two. All my stuff is connected to power buses so the actual power switch gets little use.

    The reason for a power off is to reset the base logic of the device to pre-start.
     
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