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Philips TV blew Power Switch!

Discussion in 'Hobby Electronics' started by Jase, Jul 31, 2003.

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  1. Jase

    Jase Guest

    Hi All,

    My Philips TV (68cm PowerVision - model no 29PT4673/75R) caused my GPO
    circuit breaker to overload. Thought it may have been the degauss
    thermistor (common problem so I've been told!), but noticed that the PCB
    directly under the power switch is completely burnt away and the switch no
    longer actuates.

    Firstly, why would this happen? Seems odd to me that nothing else "looks"
    damaged and the power switch is completely cactus (thermistor looks in

    Secondly, there is no markings on the switch for me to find a suitable
    replacement. Would anyone have a databook or something they could look up
    and let me know what the switch is?

    Appreciate any assistance,

  2. Phil Allison

    Phil Allison Guest

    ** High resistance ( BURNT ) switch contacts generate heat which
    CARBONISES the brown turd PCB material.

    Voila - eventual massive short out.

    .......... Phil
  3. Jase

    Jase Guest

    My Philips TV (68cm PowerVision - model no 29PT4673/75R) caused my GPO
    That's good I suppose - at least there would be nothing sinister happening
    beyond the switch causing it to burn out?

  4. Rob Judd

    Rob Judd Guest

    Powerline surge? Old, faulty switch? Could be many things. No idea on
    the part. try the usual sources.

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