| 摘要 |
<p>The present invention discloses enabling readily determining which circuit, among a plurality of circuits including an optical source lighting circuit and a power supply circuit, has a failure and repairing the circuits easily in a short period. A liquid crystal television 100 comprising a power supply circuit 24 that produces and outputs various power supply voltages from an inputted commercial AC power supply, a microcomputer 22 that outputs a control signal to a plurality of circuits, respectively, including at least the power supply circuit 24 and an inverter circuit 26 that is driven by a power supply voltage output by the power supply circuit 24 to controls turning on and off of each circuit, is provided with an input terminal 53 for providing a power supply voltage from the outside of the liquid crystal television 100, and an inspection auxiliary circuit 50 connected to the power supply circuit 24 and inverter circuit 26, generating a constant voltage that starts the power supply circuit 24 and inverter circuit 26 when a power supply voltage is provided from the input terminal 53 and outputs the constant voltage as a control signal.
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