Yellow light on dell gl170l and can't get signal to monitor and it is good I tested.

Hi paul,

1. check signal cable from pc into monitor and try to use other signal cable also do try into other monitor if prob cant solve.
2. your imedia include with graphic card? If has a graphic card try use other good graphic card to test the display run or not. If cannot.
3. Try make some cleaning into your ram, Test your ram one by one because sometime no display appear because of broken ram.

Try check this 2 site to other solutions..

Thanks..
1. How To Test Computer Monitor That Won Display Or Is Not Working
2. Fix Your Computer Monitor When the light is yellow or amber not green (try this one)

Good Luck.

Does the monitor go out completely, no power? Or just lose a signal? Check ALL cables, AC and Monitor cables. Could be a Graphics adapter issue or Monitor , try another monitor.Your computer has a few miles on it , right? You could buy a PCI Graphics card if the monitor is OK.

hello,

If you dont get a signal to the monitor check these two situations:
1.check if the graphic card is properly inserted(pul it out and then back again)
2.check if the monitor in plug in if yes try to test the monitor maybe it's broken

No, it's the Power Supply.

Power Supply has a weak voltage power rail.

The monitor goes to Power Saver mode because it is not receiving a video signal. (No Signal)
This is because the computer is not working.


Dell Support > Dimension 4700 desktop computer > Service Manual,

http://support.dell.com/support/edocs/systems/dim4700/sm/index.htm

Click on the heading - Advanced Troubleshooting

Is the Power On LED light blinking Amber? (Yellow)

Post back in a Comment.

Regards,
joecoolvette

{You can also test the power coming out of the Power Supply.

The Power Supply in your computer is an SMPS.
Switched-Mode Power Supply,

http://en.wikipedia.org/wiki/Switched-mode_power_supply

It converts the AC electricity from your home, or business, into DC electricity.
There are three main voltages produced;

A) 3.3 Volts (3 point 3)
B) 5 Volts
C) 12 Volts
All are DC voltage

Two D cell flashlight batteries produce 3 Volts DC.
(In case you are worried about being shocked.
The 'bad' electricity is contained inside the Power Supply's case)

If you do not have a multimeter, an economical unit can be purchased for around $8 to $12. A LOT of stores carry them. An auto parts store is one example.

Orange wires are 3.3 Volts
Red wires are 5 Volts
Yellow wires are 12 Volts.

ALL 3.3 Volt wires end at the same 3.3 Volt power rail in the Power Supply.
Same with 5 Volt wires, and 12 Volt wires.

You can test ANY Orange wire, or any Red wire, or any Yellow wire.

ANY Black wire you see is a Ground wire.

The red probe lead of the multimeter is the Positive lead. The black probe lead is the Negative lead.

The Positive probe lead is touched to a positive wire.
Orange, Red, or Yellow.

The Negative probe lead is touched to ANY black wire. ALL black wires are a Ground wire.

The function knob on the multimeter is set to DC voltage. (Dotted line over a solid line, with a dotted line under the solid line. The curved S line over a solid line is for AC voltage. This = No)

If there are different scale settings, set the function knob to 0-50 Volts. (DC)

If your monitor shows a yellow light and it won't turn green, the problem most likely lies with the computer. If your computer is not sending a signal to the monitor, then you have a computer problem. One way to test this is to turn the monitor off and the computer off, too.
Turn the monitor on and if it is working, it should display a message telling you that there is no signal. If you see that message, you can assume the monitor is working. If you do see it, now turn on the computer and see if the message changes.
If you turn the monitor on and you get no message, you can assume the problem lies with the monitor itself.
If you have access to another monitor, hook that one up to test the computer output.

You can now either get the monitor fixed or the computer fixed, depending on which one is bad.

Yellow led light means the monitor is in 'sleep' mode. There is no signal being sent from whatever it's connected to. If it's a computer, try checking the connection(s), make sure it's not come lose inside the computer, try if you can the computer on a different monitor or the monitor on a different computer.

Check and make sure your connections on the back of the PC are snug...and make sure you have a good connection at the back of the monitor.
Flashing light...is loss of signal.
Good Luck,
Mike

This usualy indicates that the monitor is not connected to the PC, make sure the signal leed is in properly, if it is try another monitor or another PC

It means the display is in power save mode. This status occurs when the display is on but not receiving any signal.

A yellow light indicates no signal input. Test it on another machine.