Confused screen fault detection method for display

Abstract

The invention relates to a fault clearing method of a display, in particular to a method for detecting screen tearing faults of the display. The specific detecting steps are that row outputting supply voltage is measured by a multimeter, the measurement is confirmed to be changeless after the display turns normal, and then the next step is followed; voltage of three negative poles of a final video and a kinescope is checked to confirm the normalness thereof, the next step is followed in a normal case; grid electrode G1 and accelerator G2 of the kinescope is checked, with respective voltage of -150V and 110V; faults are judged, if the voltage of G1 of -150V reduces with the time increasing and when finally to -60V, screen displaying can be normal as well; if a luminance turn knob is out of control in the case that the voltage of G1 is -150V, a capacitor within the display is judged to be broken. The method of the invention is mainly used for detecting slow start-up speed, screen darkening and letter blurring incurred by overuse of the display and ageing failure of the interior capacitor, thus being capable of leading a maintainer to clear the screen tearing faults of the display accurately.

Description

technical field [0001] The invention relates to a method for troubleshooting a display, in particular to a method for detecting a fault with a blurred screen of the display. Background technique [0002] The blurred screen failure of the display is a relatively common display failure. Because the causes of display blurred screen are also more complicated, and the performance of blurred screen caused by different reasons is also different, so it is more troublesome to eliminate. If discoloration or horizontal stripes appear on the corners of the display, it is generally caused by external or internal interference; if the characters are confused and cannot be recognized when opening a text document, it is usually due to a problem with the video memory of the graphics card, etc., such as: [0003] 1. Discoloration or horizontal stripes appear at the corners of the display [0004] The general situation is that the display is subject to external and internal strong magnetic in...

AI Technical Summary

Problems solved by technology

[0006] 2. Internal interference: The performance of internal interference and external interference is very different. If the display is disturbed internally, black horizontal stripes will appear on the display screen of the display, which is more serious.

[0007] 2. Improper setting of monitor resolution causes severe screen failure

[0011] 2. Memory damage

[0012] 3. The cause of the virus

When some viruses attack, the blurred screen will also appear. At this time, the blurred screen is not caused by the hardware, so if you restart, you can also eliminate the fault, but the root solution is to use anti-virus software to completely kill the virus.

[0013] 4. The video memory speed is too low

[0014] 5. The graphics card conflicts with some applications

[0016] In addition, there is another symptom of display blurred screen, mainly when the display is used for a long time, it is easy to appear gray screen and blurred fonts

When this phenomenon occurs, we cannot determine the cause of the failure