Displays a black screen caused by their own fault

For display their own fault caused by a blank screen, we mainly from the following points for you to provide more specific idea of repair --
1. Rapid repair black screen monitors
? ? If no display after boot shows that the reasons for exclusion of the host, you can check are not because of too high or too low voltage protection circuit caused by the display job to check whether or not to accelerate the normal voltage. In addition, the focus can be prone to problems check the following components, such as to see whether the fuse fuse, rectifier switch has been whether the breakdown, current-limiting resistor is blown to protect these parts sometimes can be seen from the appearance on its failure situation, such as burnt black. Then focus on the identification line output tubes, transformer, rectifier tube low-frequency, high-frequency rectifier tube and other key parts of the existence of damage or performance degradation or situation, the general fault display black as long as this you can quickly proceed to the hand ill.
2. Line scanning circuit Fault
? ? line scanning circuit failures are caused by electric displays add no grating without an important reason for screen display. For such failures, could be focused on the repair line scanning circuit, be the first to check whether the line oscillator circuit have questions, except under the conditions at amateur inspection trip oscillation chip is damage to the external components can also replace the line first oscillation test chip test, while promoting the pipe line damaged or abnormal status of its work, the output tube is damaged or there is the issue of load line output are likely to cause the above-mentioned failures, then you can repair and replace these parts to try. And the line output circuit in case of any problems after this maintenance replacement are generally returned to normal.
3. Kinescope and its power supply circuit Fault
? ? CRT and power supply circuits can also be triggered abnormal display without electric grating add black failure. At this time we can check whether the light under cathode-ray tube filament, using table measured filament circuit power supply to see whether the normal filament voltage. In addition, if found in need of replacement filament electric blocked well on both the filament current limiting resistor, if it is found broken CRT filament, it would take to replace cathode-ray tube. If more than normal, our focus will be to check the cathode-ray tube voltage to accelerate the normal, especially the accelerated voltage connection broken caused by such failures are the main cause, the replacement can be. If there is high pressure, we can focus on the replacement line output transformer (ignition coil) to try, which are caused by damage to parts of the black screen displays one of the leading causes failure. In addition to the above maintenance at the same time, we can also check under the cathode voltage and voltage depending on whether the normal release, if not add, as the release voltage or voltage is not normal is also without electric grating display and add an important cause of black