Abstract: An electronic device which has a self diagnosis function and a self diagnosis method using the same are provided. The electronic device includes: an interface which receives a user's selection signal for a hardware of an object to be diagnosed; and a controller which provides a plurality of lines connected to the hardware of the object to be diagnosed with a signal for diagnosis according to the selection signal which is received through the interface and calculates a diagnosis result for the hardware of diagnosis object according to a comparison result of the signal for diagnosis with a return signal which is returned from the hardware of the object to be diagnosed by a loop-back.

Abstract: An electronic device which has a self diagnosis function and a self diagnosis method using the same are provided. The electronic device includes: an interface which receives a user's selection signal for a hardware of an object to be diagnosed; and a controller which provides a plurality of lines connected to the hardware of the object to be diagnosed with a signal for diagnosis according to the selection signal which is received through the interface and calculates a diagnosis result for the hardware of diagnosis object according to a comparison result of the signal for diagnosis with a return signal which is returned from the hardware of the object to be diagnosed by a loop-back.

Abstract: A display apparatus and a method for detecting a voltage error thereof, include a display unit which displays an image, a voltage supply which supplies a voltage to respective elements of the display apparatus, a detector which monitors a plurality of voltages supplied to the respective elements of the display apparatus and detects an error occurring from at least one of the plurality of voltages, and a controller which determines a location where an error has occurred if the error has occurred from at least one of the plurality of voltages according to a detection result of the detector. Thus, the display apparatus and method thereof determine whether a voltage error is present and determine the location of one or more errors without difficulty using a circuit for performing the self diagnosis.

Abstract: An image processing apparatus including: a signal reception unit including a connector that is configured to connect to a plug of an external device and includes a first terminal and a second terminal, the signal reception unit being configured to receive a signal from the external device through the plug connected to the connector; a signal processor that processes the signal received by the signal reception unit according to a preset process; a storage that stores a test signal; and a controller that transmits the test signal stored in the storage to the first terminal when the first terminal and the second terminal are electrically connected to each other, and determines a signal transmission state of the connector to the signal processor based on a change in signal characteristics of the test signal fed back through the second terminal.

Abstract: The invention provides a degaussing circuit using a relay having the circuit for the TV of a remote controller type including the standby-power taking-out device to drive a MICOM, the degaussing device using the applied ac power and the drive-power taking-out device to drive a TV, the device including; a control device to control said degaussing device, the drive-power taking-out device, and the standby-power taking-out device through the relay and to drive the TV, located among the output stage of the standby-power taking-out device, the input stage of the degaussing device, and the input stage of the drive-power taking out device. Obtaining the cleaner screen may be attained according to the present invention.