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Monitor Problems


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7 replies to this topic

#1 Computer Headache

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Posted 10 June 2008 - 01:33 PM

Hello,
I know that there are many several topics going on that might relate to my topic, but my problem differs from the rest.
I noticed that my monitor shows the "NO SIGNAL OUTPUT" message whenever the power goes out.
Also the computer doesn't beep once(when the monitor doesn't work) , I heard that one beep means that the BIOS passed the safety test.
The list of things I did to try to fix this problem was trying:
1.) A different monitor(NOTHING HAPPENED)
2.) Unplugging the power cord to the monitor many times(NOTHING HAPPENED)
3.) Unplugging the power cord to the switching adapter(NOTHING HAPPENED)
4.) Repeatedly turned on and off the monitor(Some times instead of showing "NO SIGNAL OUTPUT" a black screen with a couple of faint gray lines running horizontally shows) (SOMETHING HAPPENED)
5.) Unplugging the VGA cable from the monitor and from the computer(Also checked the pins within the connectors heads) (NOTHING HAPPENED)
6.) Pressing and holding the computer's power switch on so the computer turns off works, but does not fix the problem like the solution listed below.

The drivers for the graphics card have been updated as of lately. I am running on 2.50 GB of ram(two 1 GB sticks and two 256 MB sticks) for awhile now.
Intel Pentium 4 HT CPU 2.60GHz
Specific Information:
NorthBridge : Intel i865PE
SouthBridge : 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge
BIOS by Phoenix Technologies
Radeon 9600 Series (V350)


Unlike other topics, my computer works by unplugging the computer's power cord and then plugging it in again. The BIOS beeps and finally the monitor turns on shows windows loading screen and proceeds to be fully functional.
Also no monitor black outs during use.

Thanks to all who takes time in answering
Bye

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#2 garmanma

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Posted 10 June 2008 - 02:00 PM

Unplugging the power cord to the switching adapter(NOTHING HAPPENED)

What are you referring to, a KVM switch?
Mark
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why won't my laptop work?

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#3 Computer Headache

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Posted 10 June 2008 - 11:34 PM

AC to DC switching power supply

#4 garmanma

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Posted 11 June 2008 - 03:16 PM

If I had a spare power supply, I would swap it out to see what happens
Mark
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#5 Computer Headache

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Posted 12 June 2008 - 01:43 AM

Are you talking about the monitor's power supply or the computer's power supply?

#6 garmanma

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Posted 12 June 2008 - 06:41 AM

The computer's. This is just an educated guess
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#7 Computer Headache

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Posted 18 June 2008 - 09:23 AM

Is there any way to run diagnostics on the power supply?

#8 garmanma

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Posted 18 June 2008 - 12:11 PM

This is the test to get the PS to turn on. With that done you can check the different voltages with a voltmeter. Unfortunately this test doesn't put a load on it

b]The purpose of this procedure is to bypass the motherboard to test the PSU.[/b]

Caution:
This procedure will involve working with live 12VDC electrical potentials which if handled improperly may lead to electrical shock. Proper precautions should also be taken to prevent electrostatic discharges (ESDs) within the case of the computer. For safety purposes please follow the instructions step by step.

First, shutdown your computer. Then unplug the power cable going into your computer.

Once you have opened the case, touch the metal of the case to discharge any static electricity.

The connector of the PSU which connects to the motherboard is readily recognizable by the number of wires in the bundle. To disconnect it you will need to press on the plastic clip to disengage it and then pull the connector up and away from the motherboard. Please take notice of the location of the locking tab and the notch on the socket of the motherboard, this will only connect one way as it is keyed. This wire bundle will have a memory of the way it has been installed and will want to bend back that direction, you may have to play around with it to find a position that the connector will stay in the same position while you run the test.

Posted Image

From the top left to right the pins are 13-24, the bottom from left to right are 1-12.


Please notice that there are PSUs with 24 pin and 20 pin connectors, the location of the green wire in the 24 pin connector is #16, and the green wire in the 20 pin connector is #14. If you look at the connector with socket side facing you and the clip on the top the number one pin will be on the bottom left corner. This makes the pin out for the 24 pin connector from left to right 13-24 on top, and 1-12 on the bottom. The pin out for the 20 pin connector from left to right is 11-20 on top , and 1-10 on the bottom. If you look at the connectors you notice that these are sockets that fit over the pins on the motherboard where the PSU cable attaches, this is where you will place the jumper. For a jumper you will need a piece of solid wire about the size of a paper clip (20-22 awg), preferably a wire with insulation. It will need to be large enough to fit firmly into the socket so that it will not need to be held in place while testing. You are at risk of electrical shock if you are holding the jumper when you power up the PSU. Insert one end of the jumper into the socket of the Green wire, and insert the other end into the socket of any Black wire.

Once the jumper is in place plug the cord back in. If the PSU is working properly the case fans, optical drives, hdds, and LEDs should power up and remain on. I would suggest that you not leave this connected any longer than is necessary for safety purposes.

To reconnect the 20/4 pin connector unplug the power cord, remove the jumper, and reconnect the connector. Take a moment at this time to make sure that nothing has been dislodged inside the case.
Mark
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why won't my laptop work?

Having grandkids is God's way of giving you a 2nd chance because you were too busy working your butt off the 1st time around
Do not send me PMs with problems that should be posted in the forums. Keep it in the forums, so everyone benefits
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