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Re: Dell 2400 PC- blinking amber light.
The symptom that you are facing generally refers to bad power supply. The same can be resolved by replacing the same. You can call dell sales to procure a new power supply. However to troubleshoot and make sure if power supply has gone bad , use the link below
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Since that isn't one of the listed codes, it is important to see what the POWER LED indicates.
If it is Flashing Amber, most likely a bad power supply
If power LED is solid amber, then either the motherboard, or a expansion card in the motherboard has failed. Remove any expansion cards, (Modem, sound or video card) try booting again.
If no Change then a motherboard
The blinking amber light on the dimesion 2400 generally means that the power supply on the system has gone bad. Switch off the system and disconnect the power cord from the back of the system . Press and hold down the power button in the front for 10 seconds.
Reconnect the cable back and try powering on the system.
If the same ,fails you would have to take the system in for repairs
1.Remove All External Devices 2.Check the Computer's Power LED 3.If the power LED has not changed unplug the Power Cable From the ComputerDisconnect All Hard Drive Power and Data Cables and power on the computer. If still no go. 4.Remove All PCI, PCI-E, and AGP Expansion Cards . 5.Remove All Memory From the Computer 6.Reseat the ATX and 12-Volt Connections . The ATX connector will be a 4 pin square connector connecting to the motherboard from the power supply and the 12-Volt Connection would be the biggest connector with a lot of colored wires. 7.If still no go. 8.Disconnect the Power Connection to the Chassis Fan 9.If the light still flashes then it could be a power supply or motherboard failure. Try a good know power supply first and if that does not fix the problem it is the motherboard. Also check the back of the tower for 4 lights lables ABCD or 1234. Rate if useful.
If the power light is blinking amber, the computer is receiving electrical power, but an internal power problem might exist.
Try, unplugging the power cable from the pc, and reinsert it, if this does not help try a differnt power outlet, if this dont help, open the computer, take the power Molex conector out of the mother board and try turning it on, if this dont help, take out the Memory modules and reseat them, if this dont work you may want to ring up dell support.