Blurring of the display is a relatively common problem during the use of the computer. This time not only looks uncomfortable, but also affects vision. This article introduces you how to do computer monitor blur. Reasons for blurred computer monitors 1. During the transportation or during use, the FBT (row output transformer) focus potentiometer is loosened or shifted, so that the focus voltage applied to the CRT changes (offset from the factory-tuned optimal voltage value), causing the screen blurry; 2. The environment around the display is damp, causing the discharge ring (semi-spherical ball) of the focus pin on the CRT tailstock plate to rust, and the phenomenon occurs when the CRT is energized; 3. In the CRT tube, static electricity is generated between the focuse and the accelerating pole (G2) due to manufacturing process or debris in the CRT cone glass bulb, and the formation and resistance cause serious blurring of the screen. Determine the cause of the display blur 1. If the blurring phenomenon is lighter, only the outline of the character becomes thicker, and the character can still be recognized, which is caused by most of the first reasons. 2. If the CRT is just blurred when it is turned on, the screen characters become more and more clear as time goes by, which is usually caused by the second reason. 3. If the large area of ​​the character is seriously blurred, the screen is white and halo, the character is unrecognizable, and the brightness of the focus potentiometer screen on the FBT is dimmed, which is the third reason. What should I do if the computer monitor is blurred? 1. For the first case, open the cover and fine-tune the focus (pote) potentiometer in the FBT to eliminate the fault. 2. For the second case, the treatment of the rust of the focus pin discharge ring on the tail plate generally uses anhydrous alcohol to clean the discharge plug and the electrode plugs and sockets on the tailstock. If the discharge ring is severely corroded, the tailstock component can be replaced. . 3. For the third case, remove the CRT tailstock plate and connect the CRT high-voltage cap 24KV high-voltage multimeter pen line (preferably using a digital multimeter with better insulation performance) to the CRT focusing plate socket to open the display AC power. The grounding pen wire is used to instantaneously discharge the accelerating pole (G2) plug 2-3 times (preferably, the CRT (G2) plug is taken out with a protective casing short wire, and the lead wire is paired for instantaneous discharge operation). After 2-3 discharges, the polarity of the focus and the electrode of the accelerating pole (G2) can be broken down. After the original circuit is restored, the clarity of the screen characters and graphics is observed. If necessary, appropriate Adjusting the focus potentiometer on the FBT will eliminate the blurring problem. How to do computer monitor blur, the above describes the common reasons for the display blur, and the solution, you can compare and check one by one. Tool chests are equipped with heavy duty ball bearing slides and you can put them on roller cabinets. Side Tool Cabinet,Rolling Tool Chest,Heavy Duty Tool Box,Tool Storage Chests Changzhou Xingsheng Tianhe Electric Appliance Co., Ltd , https://www.roller-tool-cabinet.com
What are the reasons for the computer monitor blur?
[ Huaqiang Security Network News ]