AVANT Power Supply circuit


Posted on Feb 4, 2014

The AVANT uses a Switched Mode Power Supply which means the heart of it is a 32khz ramp oscillator which is stopped if the overload protection circuit detects an overload. Without the oscillator running the 8 volt Standby voltage is not generated and is why your red standby light is not on.


AVANT Power Supply circuit
Click here to download the full size of the above Circuit.

We first need to establish if the situation is because of an actual power supply failure or an overload somewhere in the TV which is shutting down the power supply through the overload protection. This is best done at the connectors on the power supply board and below is a block diagram showing the connectors involved. Check the power at P46 between pins 1 & 2, be very careful




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Solar cell battery charger circuit
    Twang-twang circuit
    Thermocouple Temperature Control
    puff to off circuit
    Automatic Street Light Controller Circuit
    shortwave radio receiver circuit project
    Extensible Multiple Device Programmer 1
    comb filter
    Hall Effect switch
    LM4610 Dual Dc Operated Tone/volume/balance Circuit With National 3-d Sound - National Semiconductor
    Simple Under-Voltage Cut-Out
    NTC phase asynchronous motor protection circuit



    Top