The monitor would lose its signal and then come back on, but finally did not come back. Now, with power supplied, just the blue power light blinks with beeps, but no video signal.
SOURCE: monitor light blinks
have you tested the power supply connection feeds? test each connector I think you will find your power supply has failed on either the 5 volt or the 12 volt side more than likely 5 volts are down' the agp adapter needs 5 volts to run. since you have changed out every thing else I would replace that or test your dads power supply in your computer, that should do the trick
SOURCE: Power Light Blinking & Black Screen
A blinking blue light indiactes that your power-inverter board is not
putting out what it should. It needs an overhaul which may be a simple
as changing out the capacitors on the boards.
It could go beyong that to transistors or even a bad bulb.
It will have to be opened up to do that.
A picture may show visual signs of damage. If you can take one and email it to me , I'll take a look.
Fran
SOURCE: Power light blinking on and off
You will need to replace the below failed caps.
2 - 1000uF @ 10V
3 - 470uF @ 25V
1 - 470uF @ 10V
SOURCE: Samsung 56V, difficult to switch on the monitor
check the capacitors inside the monitor, as they may be broken, and they start screen up, just change em and it should kickstart fine
SOURCE: rapid green blinking green light on monitor and power & no video
try to acces the menu and to reset the display settings.
try another monitor on your computer to be sure that your video board is working, and if it is change the resolution in 1024X768 and try again your dell display
When
you plug in the power cord is there any lights whatsoever on the laptop, where
the plug goes in or on the AC Adapter of the power cord?
When you press the power button do you hear fans running, hard drive spinning,
lights on the computer, hear any beeps or lights constantly blinking, hear the
DvD/CD drive click and the light on the drawer of the DvD/CD turn on for a
second or two? If so the computer is trying to boot or may have booted,
but the screen is not showing for some reason.
Beep tones and blinking lights tells the technicians what is going on with the
laptop and why it is not booting. Most times it's a motherboard issue
when you hear beeps or blinking lights continuous. Most times the problem
is with the memory or Video Card. Count the Blinking Lights or Beeps and take
note of their pattern (1 Long or 1 Long followed by 2 Short).
Maybe you have a Static Charge
Buildup. Remove the Power Cord, then Press and Hold the power button for
30 seconds. After 30 seconds plug the power cord back in and hit the
power button to see if it boots.
Maybe
your memory is bad or the memory slot is bad.
Remove
the Power Cord, Open the Case and remove one of the memory chips. Set the
chip aside then try rebooting the computer. If it boots, then you know
the memory chip you set aside is bad so mark an x on it with an ink pen.
If it fails to boot then move the chip to the next memory slot and try
rebooting. If it fails take the chip out and set it aside, then put the
other chip in and try booting it in both slots. If it boots, just to
verify that the chip set aside is bad, mark an x on it and put it into the open
memory chip slot and try booting.
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Mine does the same thing. May stay on for 3-5 minutes and then goes blank with the blue light remaining on. Seems like the touch switch may be a problem. Its a great feature but hasn't gained wide acceptance. Maybe it has a short life.
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