PHILIPS 17-inch flat panel display power abnormal sound does not show (not bright) maintenance examples

Philips 17-Inch Desktop LCD display power is not bright, and accompanied by the clatter of sound, if the long press switch will prompt "Detection of input line signal" detection is caused by the failure of the switch to show. The following is the maintenance idea and process.

Maintenance Analysis Process

1. After the display of the monitor after the display of the monitor after a short circuit to continue the electrical constant suction.

2. The habitual press and hold the power switch to switch several times after the discovery of shutdown failure. However, if you hold the monitor for a long time, you will be prompted to "measure the input line signal". This indicates that the monitor is working properly at this time.

3. Based on the above fault performance combined with their own maintenance experience to determine the failure of the switch is extremely high probability of the fault, the second-grade short-circuit.

4. Open the LCD cover to remove the key plate using the digital multimeter diode measurement, the switch is bad. After replacing a new switch, it can be turned on properly, and the display effect is perfect without any abnormal sound.

At this point, the Philips LCD display is not bright (not shown) and accompanied by abnormal sound of the fault repair completed