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Why is my projector not switching on - Panasonic Office Equipment & Supplies

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  • Panasonic Master
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Can vary from the fuse , surge protectors and possible compoents in the SMPS, the swittch mode power supply.
So use a meter to check for short inthe SMPS, if so check after suspectng on the rectifier, the filter capacitor or the OSC/DRIVER output. If not on the primary side and all voltagesare correct, then a short onthe seccondary side can switch offf the SMPS with the feedback current limiter. If so you will need to check one by one to disconnect and find the voltage build up to center on the fault.

Posted on Aug 31, 2010

  • 1 more comment 
  • Bram Jan 30, 2011

    Some models do have an option to disable all the controls, including ON/OFF/SBY. E.g. Panasonic PTL720 has the option FUNCTION ON or OFF.
    To reset the FUNCTION back to ON do the following, POWER ON/OFF toggle switch to ON, the RED SBY light must come ON. Press and HOLD the ENTER button and simultaneously press the MENU button for more than 2 seconds. The blower shall turn on and the RED SBY light shall turn GREEN. Projector is now ready for normal ops.

    Regards Brasto

  • Bram Jan 30, 2011

    Some models do have an option to disable all the controls, including ON/OFF/SBY. E.g. Panasonic PTL720 has the option FUNCTION ON or OFF.
    To reset the FUNCTION back to ON do the following, POWER ON/OFF toggle switch to ON, the RED SBY light must come ON. Press and HOLD the ENTER button and simultaneously press the MENU button for more than 2 seconds. The blower shall turn on and the RED SBY light shall turn GREEN. Projector is now ready for normal ops.

    Regards Brasto

  • SCAdmin Dec 13, 2012

    Brasto's suggestion worked for me.

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