Backlight unit, display apparatus having the same and method of inspecting the same

A display apparatus comprising:

• a display panel which receives a light and displays an image;
• light source groups which supply the light to the display panel, each of the light source groups including a light source;
• a converter which boosts an input voltage to a driving voltage and supplies the driving voltage to the light source groups;
• a compensator connected to the light source groups and which compensates a deviation between currents fed back to the compensator from the light source groups;
• a detector connected between the light source groups and the compensator and which detects a maximum voltage from among feedback voltages fed back to the compensator from the light source groups;
• and
• a protector connected to the detector, wherein the protector receives the maximum voltage, compares the maximum voltage to a reference voltage to generate a compared result and outputs a protection signal to the converter based on the compared result.

A method of inspecting a backlight unit, the method comprising:

• boosting an input voltage to generate a driving voltage;
• applying the driving voltage to light source groups, each having a light source;
• compensating currents fed back from each of the light source groups to generate compensated currents;
• detecting a maximum voltage from among feedback voltages of each of the light source groups, the feedback voltages adjusted based on the compensated currents;
• comparing the maximum voltage to a reference voltage to generate a compared result and output a protection signal based on the compared result;
• and
• controlling the boosting the input voltage based on the protection signal.