Discharging a CRT

Discussion in 'Macintosh Computers' started by macEfan, Oct 8, 2005.

  1. macEfan macrumors 65816

    macEfan

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    #1
    Can anyone tell me a SAFE way to discharge an iMac CRT? I want to replace my imac's dead analog board.
     
  2. combatcolin macrumors 68020

    combatcolin

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    Oct 24, 2004
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    Northants, UK
    #2
    Switch it off and come back in a few days.

    Or maybe even a week.
     
  3. Mac_Freak macrumors 6502a

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    Apr 22, 2005
    #3
    Hold on to somebody else and touch it :)
    The other person should receive the most shock :D
     
  4. CanadaRAM macrumors G5

    CanadaRAM

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    On the Left Coast - Victoria BC Canada
    #4
    There are special tools you can get that consist of a probe, copious insulation, a ground wire and sometimes a resistor to make the discharge more gradual. Electronics supply stores should have these.
     
  5. macEfan thread starter macrumors 65816

    macEfan

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    #5
    thanks! Do you have any idea on how to tell if a grounded outlet is working properly? I dont wana get fried.
     
  6. iEdd macrumors 68000

    iEdd

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    Australia
    #6
    3 months maybe?
    CRTs have big capacitors, some can hold a charge for months.
     
  7. shadowmoses macrumors 68000

    shadowmoses

    Joined:
    Mar 6, 2005
    #7
    Be careful discharging a CRT they are very dangerous, you will need a rubber handed screw driver to do the job, have a google on how to do it youw ill find various guides......And CRT's can hold a charge for years so leaving it unplugged for a few days wont be much help....

    SHadow
     
  8. combatcolin macrumors 68020

    combatcolin

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    Oct 24, 2004
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    Northants, UK
    #8
    Had a funny feeling it would take more than a few days.

    Not as funny a feeling as you would get from a charged CRT though :D

    Look on the plus side, good zap and super hero powers ahoy!
     
  9. GimmeSlack12 macrumors 603

    GimmeSlack12

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    Apr 29, 2005
    Location:
    San Francisco
    #9
    After taking off the cover of the iMac or screen, Take a plastic or rubber ended screwdriver, and slide it under the main grommet (red rubber plug) that plugs into the top backside of the CRT. Use the screwdriver and touch the metal under that main red grommet. Can't miss it, it is a BIG red (usually dusty dark red) rubber grommet. That will discharge the monitor.
     

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