First, the boot image without color 1, adjust the image color system is "automatic" (camera gun color system is set in black and white state)
2. Press the "MENU" button on the monitor panel to increase the "Chroma" value in the image menu. 3. Adjust the "Contrast" item in the monitor software menu. 3. There is a horizontal line or twill interference in the boot image. Whether the connector of the signal connection line between the device and the host computer is in poor contact, whether the connection between the monitor and the host computer display card is in good contact, and the interface may be reconnected or shaken to detect whether the horizontal line or the twill interference disappears during shaking.
2. Exclude the external environment (motor vehicles, power tools, etc.) and try to avoid using the above interference sources and monitors on the same power socket.
3. Disconnect the signal source of the splitter from the host computer and exit the monitoring screen to check whether the interference exists. If the problem still exists, it can be determined that there is interference failure on the monitor main board, and the mainboard must be changed.
Fourth, boot image dark or black screen 1, appropriate increase in the image menu, "brightness, contrast" value 2, open the monitor back shell, adjust the ignition voltage above the "screen" knob until the brightness can be right, can not appear white back Sweep (Note: Turn on the back cover of the monitor and energize it. The main board of the monitor must be placed on an insulated surface, and do not touch the high voltage cap.)
3, after the above 1,2 items can not solve the problem, can replace the motherboard.
4. After the above items 1, 2, and 3 are processed, the problem cannot be solved, and it can be determined that the picture tube has been aged.
5. No screen, no characters, and indicators are on the screen. 1. Press the up or down button on the top panel of the monitor first. If it can be turned on, it is normal standby.
2. After the first step is detected, the system still cannot be started, and the monitor main board needs to be replaced. (There is a problem with the standby circuit)
Six, automatic boot 1, the monitor power switch is in a normal open state, power on directly boot is a normal phenomenon.
2. The monitor's power switch has been turned on and has gone out of control. (Judgement: The monitor's power switch can be turned on or off. Check if the power indicator on the panel is on when the switch is turned on. If the power switch is off, it is off. There are more than one. The phenomenon can be judged that the switch is normal)
7. The power-on indicator is off. 1. Use the electric pen to confirm whether the outlet has electricity and whether the socket indicator is on.
2. Replace the other sockets or change the sockets of the same socket. 3. Check whether the monitor power cable is off.
4, check the monitor motherboard connection cable is connected.
5, after the above 1,2,3 detection still can not solve the problem, need to replace the motherboard.
Nine, remote control failure 1, check the remote control battery is installed correctly.
2, replace the new battery.
3, using the same type of remote control test to determine whether the remote control failure or monitor receiver head failure. If another remote controller of the same model can be used on the monitor, it can be determined that the monitor receiver head is faulty, and the mainboard needs to be changed.
Tenth, the boot image at the bottom or top of the serious compression problems that need to replace the monitor board. (The reason is that the field circuit works abnormally)
11. After starting up, the parts on the motherboard are scorched, blackened, and severely hot.
This problem requires the replacement of the monitor's motherboard (due to a severe short circuit in the circuit).
Twelve, the machine shell has a slight leakage phenomenon 1: This is a kind of induction electricity, is a normal phenomenon.
2: External grounding wire can be eliminated and the inductive power can be eliminated when the outer grounding wire is in good contact.
3: The ground inside the machine should be in good contact.
Thirteen, there is a bright spot on the screen after shutting down: 1: The bright spot after shutting down is the high pressure release process of the picture tube, and the bright spot disappears within about 5 seconds, which is a normal phenomenon.
14. After the power on, a vertical line is displayed on the monitor screen. 1. If the problem occurs, the monitor main board needs to be replaced (because there is an open circuit in the line circuit).
15. After the monitor is used for a period of time, it will be automatically blank.
1: The motherboard needs to be replaced when this problem occurs (cause there is a thermal breakdown or a false weld on the main board)
16. The entire screen is blurred and menu characters are blurred.
1. Adjust the ignition coil “FORCE†knob to make the character adjustment clear. 2. The dryer can be used for drying during emergency use. After drying, the screen can be recovered clearly.
3. After replacing the monitor mainboard, keep the environment ventilated. (The reason is due to the damp seat)
Seventeen, start burning fuse 1, replace with 3.15A fuse, whether the power can boot normally.
2, after the replacement of the fuse power, if you continue to burn the fuse, indicating that there is a short circuit, you can replace the motherboard.
(Note: If you see the fuse that has been burned is black or burst, please replace the motherboard directly)
18. The boot display shows a horizontal bright line. The problem is that the monitor main board needs to be replaced. (The reason is that the field circuit is not working or the work is not normal.)
19. After the monitor is turned on, the image is “seriously distortedâ€. The problem is that the monitor main board needs to be replaced (cause the line circuit or power supply is not working properly).
Twenty, boot screen full screen display irregular white horizontal line appears the problem need to replace the monitor board. (The reason is 22UF/250V capacitor failure or replacement of 22UF/250V capacitor)
21ã€After booting, hear a continuous buzz and the problem is that the monitor's motherboard needs to be replaced (because of a short circuit in the line or line circuit, or a short circuit in the video amplification circuit in the video board)
Twenty-one, serious color cast after turning on (reddish, blue or other primary colors)
The problem is that the monitor main board needs to be replaced (because the component on the display panel has failed or the bus RGB value is set incorrectly)
Twenty-two, after the start of a horizontal black line, move from top to bottom.
The monitor motherboard needs to be replaced when this problem occurs (because 100UF/400V failure or replacement of 100UF/400V capacitor)
Twenty-three, after the boot panel keys are invalid 1: First confirm that all keys are invalid or a key is invalid, if it is a key is invalid, you can replace bad keys.
2: If all keys are invalid, you need to replace the motherboard (cause the CPU keying circuit failure caused)
Twenty-four, after the boot the front panel lights twinkling.
1: The monitor main board needs to be replaced when this problem occurs (because the protection circuit is working, the motherboard has over-current or over-voltage protection status)
Twenty-five, the image is stretched to the right or compressed to the left in the horizontal direction after the power is turned on. 1: The monitor board needs to be replaced when the problem occurs. (The reason is that there is a problem with the circuit.)
Twenty-six. After starting the machine, the inside of the machine emits an abnormal sound: If the problem occurs, the main board of the monitor needs to be replaced (caused by the ignition of the ignition coil or the high pressure cap). If it is a high pressure cap, the high pressure cap can be painted at a high temperature. Insulation glue can be)
27. After the MC14HC is turned on, the digital camera is displayed and no image is displayed. After the C105/10UF/25V capacitor is replaced, the image is displayed normally.
Twenty-eight, MC21H display after the boot digital machine, no image display, replace the DZ104 regulator, there is a normal image display.
Twenty-nine, MC21Hp after the boot image display, the screen appears irregular spots, after checking the degaussing coil leakage, connected to the degaussing coil and then re-open the power supply, the machine display is normal.
2. Press the "MENU" button on the monitor panel to increase the "Chroma" value in the image menu. 3. Adjust the "Contrast" item in the monitor software menu. 3. There is a horizontal line or twill interference in the boot image. Whether the connector of the signal connection line between the device and the host computer is in poor contact, whether the connection between the monitor and the host computer display card is in good contact, and the interface may be reconnected or shaken to detect whether the horizontal line or the twill interference disappears during shaking.
2. Exclude the external environment (motor vehicles, power tools, etc.) and try to avoid using the above interference sources and monitors on the same power socket.
3. Disconnect the signal source of the splitter from the host computer and exit the monitoring screen to check whether the interference exists. If the problem still exists, it can be determined that there is interference failure on the monitor main board, and the mainboard must be changed.
Fourth, boot image dark or black screen 1, appropriate increase in the image menu, "brightness, contrast" value 2, open the monitor back shell, adjust the ignition voltage above the "screen" knob until the brightness can be right, can not appear white back Sweep (Note: Turn on the back cover of the monitor and energize it. The main board of the monitor must be placed on an insulated surface, and do not touch the high voltage cap.)
3, after the above 1,2 items can not solve the problem, can replace the motherboard.
4. After the above items 1, 2, and 3 are processed, the problem cannot be solved, and it can be determined that the picture tube has been aged.
5. No screen, no characters, and indicators are on the screen. 1. Press the up or down button on the top panel of the monitor first. If it can be turned on, it is normal standby.
2. After the first step is detected, the system still cannot be started, and the monitor main board needs to be replaced. (There is a problem with the standby circuit)
Six, automatic boot 1, the monitor power switch is in a normal open state, power on directly boot is a normal phenomenon.
2. The monitor's power switch has been turned on and has gone out of control. (Judgement: The monitor's power switch can be turned on or off. Check if the power indicator on the panel is on when the switch is turned on. If the power switch is off, it is off. There are more than one. The phenomenon can be judged that the switch is normal)
7. The power-on indicator is off. 1. Use the electric pen to confirm whether the outlet has electricity and whether the socket indicator is on.
2. Replace the other sockets or change the sockets of the same socket. 3. Check whether the monitor power cable is off.
4, check the monitor motherboard connection cable is connected.
5, after the above 1,2,3 detection still can not solve the problem, need to replace the motherboard.
Nine, remote control failure 1, check the remote control battery is installed correctly.
2, replace the new battery.
3, using the same type of remote control test to determine whether the remote control failure or monitor receiver head failure. If another remote controller of the same model can be used on the monitor, it can be determined that the monitor receiver head is faulty, and the mainboard needs to be changed.
Tenth, the boot image at the bottom or top of the serious compression problems that need to replace the monitor board. (The reason is that the field circuit works abnormally)
11. After starting up, the parts on the motherboard are scorched, blackened, and severely hot.
This problem requires the replacement of the monitor's motherboard (due to a severe short circuit in the circuit).
Twelve, the machine shell has a slight leakage phenomenon 1: This is a kind of induction electricity, is a normal phenomenon.
2: External grounding wire can be eliminated and the inductive power can be eliminated when the outer grounding wire is in good contact.
3: The ground inside the machine should be in good contact.
Thirteen, there is a bright spot on the screen after shutting down: 1: The bright spot after shutting down is the high pressure release process of the picture tube, and the bright spot disappears within about 5 seconds, which is a normal phenomenon.
14. After the power on, a vertical line is displayed on the monitor screen. 1. If the problem occurs, the monitor main board needs to be replaced (because there is an open circuit in the line circuit).
15. After the monitor is used for a period of time, it will be automatically blank.
1: The motherboard needs to be replaced when this problem occurs (cause there is a thermal breakdown or a false weld on the main board)
16. The entire screen is blurred and menu characters are blurred.
1. Adjust the ignition coil “FORCE†knob to make the character adjustment clear. 2. The dryer can be used for drying during emergency use. After drying, the screen can be recovered clearly.
3. After replacing the monitor mainboard, keep the environment ventilated. (The reason is due to the damp seat)
Seventeen, start burning fuse 1, replace with 3.15A fuse, whether the power can boot normally.
2, after the replacement of the fuse power, if you continue to burn the fuse, indicating that there is a short circuit, you can replace the motherboard.
(Note: If you see the fuse that has been burned is black or burst, please replace the motherboard directly)
18. The boot display shows a horizontal bright line. The problem is that the monitor main board needs to be replaced. (The reason is that the field circuit is not working or the work is not normal.)
19. After the monitor is turned on, the image is “seriously distortedâ€. The problem is that the monitor main board needs to be replaced (cause the line circuit or power supply is not working properly).
Twenty, boot screen full screen display irregular white horizontal line appears the problem need to replace the monitor board. (The reason is 22UF/250V capacitor failure or replacement of 22UF/250V capacitor)
21ã€After booting, hear a continuous buzz and the problem is that the monitor's motherboard needs to be replaced (because of a short circuit in the line or line circuit, or a short circuit in the video amplification circuit in the video board)
Twenty-one, serious color cast after turning on (reddish, blue or other primary colors)
The problem is that the monitor main board needs to be replaced (because the component on the display panel has failed or the bus RGB value is set incorrectly)
Twenty-two, after the start of a horizontal black line, move from top to bottom.
The monitor motherboard needs to be replaced when this problem occurs (because 100UF/400V failure or replacement of 100UF/400V capacitor)
Twenty-three, after the boot panel keys are invalid 1: First confirm that all keys are invalid or a key is invalid, if it is a key is invalid, you can replace bad keys.
2: If all keys are invalid, you need to replace the motherboard (cause the CPU keying circuit failure caused)
Twenty-four, after the boot the front panel lights twinkling.
1: The monitor main board needs to be replaced when this problem occurs (because the protection circuit is working, the motherboard has over-current or over-voltage protection status)
Twenty-five, the image is stretched to the right or compressed to the left in the horizontal direction after the power is turned on. 1: The monitor board needs to be replaced when the problem occurs. (The reason is that there is a problem with the circuit.)
Twenty-six. After starting the machine, the inside of the machine emits an abnormal sound: If the problem occurs, the main board of the monitor needs to be replaced (caused by the ignition of the ignition coil or the high pressure cap). If it is a high pressure cap, the high pressure cap can be painted at a high temperature. Insulation glue can be)
27. After the MC14HC is turned on, the digital camera is displayed and no image is displayed. After the C105/10UF/25V capacitor is replaced, the image is displayed normally.
Twenty-eight, MC21H display after the boot digital machine, no image display, replace the DZ104 regulator, there is a normal image display.
Twenty-nine, MC21Hp after the boot image display, the screen appears irregular spots, after checking the degaussing coil leakage, connected to the degaussing coil and then re-open the power supply, the machine display is normal.
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