Question about Computer Monitors
Lower down the computer resolution and frequency rate from Video setting>>Advanced in control panel (personalize on Vista) replace the video cable.
If that does not help then the monitor is defective.
If there is a flashing led on front of the monitor, that indicates a fault condition.
The flashing light indicates a diagnostic state called protection.
When the Monitor goes on protection there are only two possible causes.
1 The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.
2 The protection circuit detected a wrong voltage or a broken contact, identified an internal fault and kicked in , starting the flashing light.
If you are in situation one, then the monitor will reset just unplugging power cord for one or two hours, sometimes even minutes.
If you are in situation 2 , then there is an internal fault.
Common faults that can occurr suddenly are a blown capacitor on power board, the inverter board powering up backlight lamp has blown, or a fault on main lcd controller board.
check also the video cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.
Check connectors, try moving the video cable, and if the cable is not built in, then also try a replacement cable.
If under warranty contact manufacturer to find out a service point.
If you want to repair at your own expenses, just locate any good qualified repairer.
Posted on Mar 06, 2009
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Feb 04, 2011 | Dell E173FP 17" LCD Monitor
sure the monitor is on. If no power light (green or orange light) is
seen on the monitor display try pressing the power button until it comes
on. If no light comes on after several attempts continue to below
connections not connected properly.
Computer is asleep
your computer monitor was on and you stepped away from the computer and
upon returning it was black it's likely that the computer is asleep.
Try moving your mouse, clicking the mouse buttons, and/or pressing any
key (space bar) on the keyboard to wake it up.
sure that you are connecting the monitor to the back of the computer in
the 15-pin connector as shown to the right or older computer 9-pin
If the computer is properly plugged in, make sure it's getting getting power.
you are not receiving power from a known working wall outlet and if the
power cord is removable, replace it with the one connected to the
computer and attempt to power on the monitor again. If the monitor still
does not get power or it is not removable, it is recommended that the
monitor be replaced or serviced at a local TV / Computer repair shop.
If the monitor is receiving power, check the status light.
the light is orange or flashing ensure that the monitor is not in a
suspend mode by moving the mouse or pressing a key on the keyboard. If
the computer does not get a display by moving the mouse or touching the
keyboard, turn off the computer and monitor and reconnect the data cable
from the back of the computer, and if removable, the back of the
monitor. Turn the computer back on; if you still encounter the same
issue, continue reading through the other possibilities.
that the brightness and contrast is turned up or attempt to adjust the
brightness and contrast. If adjusting the brightness or contrast has no
affect on the monitor continue reading through the other possibilities.
the computer beep when it is powered on and/or does it appear that the
computer has activity? If the computer does not beep or beeps abnormally
it is possible that the computer itself is experiencing a hardware
issue or is exhibiting a No Post.
Steps on troubleshooting an irregular POST or no beeps can be found on document CH000607.
you have followed the above recommendations and are still encountering
the same issue, it is likely that the computer may have either a bad
video card or monitor. The best method of determining this is to do one
or both of the following:
your monitor works on another computer it is safe to assume that the
video card or potentially the motherboard within the computer is bad.
Steps in troubleshooting a video card can be found on document CH001028.
If another monitor works on your computer it is safe to assume that your
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