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Introduction |
This type of repair affects many other models of display, as the circuits are very similar. | | The backlight of the display does light up only for a few seconds, one reason is a defective transformer in the inverter stage of the power supply. | | Here one defect type will be fixed which is a defective transformer in the inverter stage of the power supply. | | In this case, a few windings of the transformer have an short circuit, causing the resistance of the two secondary coils to be different. | | The transformer has an internal short circuit of a few windings, so the DC resistance of the two secondary coil is a bit different. This transformer has two secondary coils.
This is only one possible fault of this device.
very good by measuring the temperature of the transformer left and right side using infrared thermometer or thermal imager. The temperature will differ greatly. | | | Power supply model number is BN44-00238 |
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