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Sony CRT Magnetism SCC-L04MM-A IBM P202/6558-43N

Discussion in 'Electronic Repair' started by Wild Bill, Mar 1, 2004.

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  1. Wild Bill

    Wild Bill Guest

    Hi.. I hope I'll get some comments from someone that's encountered this
    problem.

    This CRT appears to have some strong magnetism in it, centered at the top.
    Other than that, I suppose it could possibly be due to shock damage, because
    I don't know the history of this used monitor.

    I can't seem to change the resulting flux lines on the screen. I've tried a
    small degauss coil which isn't effective at all. I tried a Weller soldering
    gun, and it can't weaken it either.

    I've seen how older Sony CRTs are manufactured with the steel tubular frame,
    and if this problem is due to magnetism, I think that the frame's been
    magnetised at the top.

    CRT 50LMD15X

    The monitor is a Sony OEM for IBM
    Manuf date May '98
    FCC AK8GDM500PS

    Thanks
    WB
     
  2. Wild Bill

    Wild Bill Guest

    Crap.. the chassis is actually SCC-L04M-A (not MM-A)
     
  3. Jerry G.

    Jerry G. Guest

    If it will not demagnetize, the mask in the tube may be damaged. The monitor
    may have been badly jarred, or even dropped.

    If you are very good at setting up the purity and convergence in these, you
    can try to move the yoke, and go through the complete set-up. But, I think
    the fault is the mask in the tube.

    --

    Greetings,

    Jerry Greenberg GLG Technologies GLG
    =========================================
    WebPage http://www.zoom-one.com
    Electronics http://www.zoom-one.com/electron.htm
    =========================================


    Hi.. I hope I'll get some comments from someone that's encountered this
    problem.

    This CRT appears to have some strong magnetism in it, centered at the top.
    Other than that, I suppose it could possibly be due to shock damage, because
    I don't know the history of this used monitor.

    I can't seem to change the resulting flux lines on the screen. I've tried a
    small degauss coil which isn't effective at all. I tried a Weller soldering
    gun, and it can't weaken it either.

    I've seen how older Sony CRTs are manufactured with the steel tubular frame,
    and if this problem is due to magnetism, I think that the frame's been
    magnetised at the top.

    CRT 50LMD15X

    The monitor is a Sony OEM for IBM
    Manuf date May '98
    FCC AK8GDM500PS

    Thanks
    WB
     
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