Greetings everyone.
Please I need help with the above monitor.
Below is the summary of what happened and what I have done:
The monitor started by turning off 2 seconds after it was turned on. It displayed with a backlight when it turned on. However, the standby light remains on after it is turned off on its own, I have to press the power button again to turn it on, but it will go back to standby after 2 seconds.
The backlight driver IC is 0b3350cp.
I applied a 370k SMD resistor on the CMP pin which is pin 6, while the other end of the resistor was soldered to the ground. (I did this in an effort to remove it from protection mode)
I noticed there was no backlight light as usual but the display remained stable, it doesn't go back to standby mode as it was behaving before.
The 370k resistor was removed, and the display remains but with no backlight.
I checked the driver IC for the vailable voltages but none except for the vin which is 12v.
The backlight voltage remains at 12v.
I set my multimeter in diode mode, the driver IC reads 0.5 on all legs except pin 3 which is the gnd.
The 2 N-channel fets beside the driver IC read 0.4, and 0.5, except the leg connected to ground resistors
Please what do I do next?
attached are the pictures of the monitor and mb
ps: when it displaying for 2 secs. 12v appears at the gate for the 2 seconds but currently, nothing
please help
Please I need help with the above monitor.
Below is the summary of what happened and what I have done:
The monitor started by turning off 2 seconds after it was turned on. It displayed with a backlight when it turned on. However, the standby light remains on after it is turned off on its own, I have to press the power button again to turn it on, but it will go back to standby after 2 seconds.
The backlight driver IC is 0b3350cp.
I applied a 370k SMD resistor on the CMP pin which is pin 6, while the other end of the resistor was soldered to the ground. (I did this in an effort to remove it from protection mode)
I noticed there was no backlight light as usual but the display remained stable, it doesn't go back to standby mode as it was behaving before.
The 370k resistor was removed, and the display remains but with no backlight.
I checked the driver IC for the vailable voltages but none except for the vin which is 12v.
The backlight voltage remains at 12v.
I set my multimeter in diode mode, the driver IC reads 0.5 on all legs except pin 3 which is the gnd.
The 2 N-channel fets beside the driver IC read 0.4, and 0.5, except the leg connected to ground resistors
Please what do I do next?
attached are the pictures of the monitor and mb
ps: when it displaying for 2 secs. 12v appears at the gate for the 2 seconds but currently, nothing
please help
Attached Files
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