Without buying a multimeter the easiest way is to check with your nose. Sounds silly but trust me I've DOA'd over a thousand power supplys and the manufacurers that I have returned them to have never argued with my nose - neither has my multimeter. Sharp acrid metalicy/plasticy tipe smell and it's fried.
Other things are to try another aplience in the power point. The other thing that comes to mind is that a fair few power supplies come with a dual voltage switch 100/240 v. In Australia if you switch it over to 100v unit fried, if you local power is 100v and you have it set to 240v I have no idea what the result would be.
U can by a reasonable power supply for as little as $30AU but it is worth spending up to around $60AU ($3000US & $6000US in todays economic climate) especialy if you are thinking of adding further components to your system.
Final note my wife learnt to her advantage (hubby not such a dumb bugger) sacrafitial or resetable powerboards are a must.
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It could be internal where the power cord plugs into the all-in-one. If there are no lights at all when the power cord is plugged in then most likely that might be the problem. It could also be the motherboard inside the all-in-one. Hopefully there are some blinking lights or beeps when the cord is plugged in. If so, they tell the technician what the problem is.
you can buy a new power cord or you can use another wire to replace the cord. just buy the same size then you will need to remove the rear cover to access the internal. and then the old cord must be removed from the ac terminal pin and the assembled wire with plug that you buy can be replaced. you can directly re soldered the end of the ac wire at the pcb for ac supply.
Your best bet is to try replacing the AV cords (try borrowing a friends if you can, this will tell you if it's an internal problem or a problem with the AV cords themselves). If this doesn't fix the problem, then you going to want to send it to be repaired.
I am claudus_07 and i was a Dell - XPS Technical Support Specialist before so i will be glad to assist you with your concern.
As you said into your post, you tried plugging the AC Adapter to the power source without plugging the other end into the XPS laptop and the Green Light on the adapter is lit. But when you plug the jack on the laptop, the Green light is out. As for my experience on your laptop, there could be a problem with the power supply or the motherboard of your XPS laptop. Because everytime you plug the adapter to the laptop, the green light is going out so it means that the laptop or the adapter is grounded.
Here's what you need you to:
Step 1: Call Dell XPS Technical Support 1-800-624-9896
Step 2: Tell them the issue and the things that youve done.
Step 3: At the end of the troubleshooting, i know that the Technician will either replace the Power Supply, Motherboard, or the Adapter. (if you have a friend that has a Adapter same as yours, you may try to use it just to isolate the issue the Technician will choose from the Power Supply or the motherboard)
Step 4: If the Technician replaces the power supply and the issue still persists, call technical support again and ask them to replace the motherboard, no need to repeat the troubleshooting steps anymore just tell them that youre already done with it. (Dont ask for a system exchange, because i know that they will not give what you want.)
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1. Does the AC cord look ok? Not damaged?
2. Have you tried another AC outlet?
3. Does the AC cord unplug from the radio?
When you operate the radio from the AC power cord, the radio uses an internal power supply consisting of a step-down transformer, rectifier, and filter that converts the AC to DC to operate the radio.
When you run the radio off of batteries, it powers the radio directly. In some radios, when you plug the AC cord into the radio, it activates a switch that disconnects the battery voltage to the radio so that the batteries wont be damaged from the voltage created by the internal supply.
The radio can be powered by either the batteries or the internal supply. You don't want either supply affecting the other, so that is why a switch is sometimes used.
Since the radio works fine off of batteries, that would indicate that there is a problem with the internal power supply. This could be a blown fuse, bad transformer or bad rectifier diode.