LEDs out.  If power cable is pulled and replaced or if the plug is jiggled the lights flicker for a few seconds then go out.

Could be a short in the strips test the strips In each row if you look at the row count the LEDs each require 2.8 dc volts add them up for each row example if you have 9 in the row you will need 25.2 volts dc to power test it .if you look at the right side of the strip you will see 3 dots a plus two minus use center minus as ground and plus for positive . If leds still flicker or dim or some don't light than theres a short within the led strips .

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Really sounds like the battery is dead. Are you plugged into a wall outlet? If so, check to make sure that the indicator on the laptop shows that you are connected. The power connector where the external power supply connnects get damaged all the time. If the plugged in icon is not on and you are sure the outlet is working, try wiggling the plug on the laptop to see if it makes connection. If the light flickers on and off then you have a bad connector for sure. Could also be a bad cord on the adapter, they break over time because the get pulled on, wrapped too tight, etc etc.

replace the head light switch, also check to make sure the wiring harness is not burnt

I may be in low-power mode. Try jiggling the mouse, pushing enter on the keyboard a couple times and just pushing the power button once.

If none of those work push and HOLD down the power button for about 10 seconds and the computer should shut off.

As an absolute last resort pull the power plug, leave it out a few seconds then plug it back in and power it on.

One of these methods should at least get the screen back up.

How old are they? It seems like 3 years is the life expectancy for any electronics these days whether it be notebooks, mp3's etc. Someone said call Bose and they will send you new ones for $75. Mine are doing the same exact thing yours are. Im calling tomorrow!

My AKAI PDP5016H 50" plasma TV turned off suddenly and wouldn't come back on. When it happened we heard a "Fizz" or "Pop" sound. I took it apart looking for a bad capacitor or obviously fried component. When powered on, not even the standby light would come on. When I couldn't find anything wrong I called my electrician neighbor who looked at it with the power connected and started looking at the fuses and started jiggling cables.

When he jiggled one of the cables, the TV came on! It was a bad cable connector on a power supply board. Look at the photos to see the problem:

The circled area is the problem board and on the second photo the arrow points to the power connector that was bad.

http://i238.photobucket.com/albums/ff244/akmbr/CIMG0074.jpg

http://i238.photobucket.com/albums/ff244/akmbr/CIMG0075.jpg

Disconnect the bad cable and find a connector that is identical (try RadioShack) and replace it.

Now I hate to tell you that the solution was to open up the back of my TV, connect the power, turn on the power switch, and start jiggling cables - But it was! You may get yourself electrocuted or worse by doing this, so BE CAREFUL!

Here's a clue: on the bad connector on my TV the connector itself had become discolored brown as if it had been cooked or something. Once the my electrician buddy jiggled that cable the LEDs on the main power board came on and the TV made it's characteristic "coming on" noise. In your instance it may be a fried cap or a lot of other things. Keep an eye out for anything that looks out of place or funky.

GOOD LUCK!

on the computer you will see 4 leds labled A B C D. make sure all are Green. if not there is some issue withe the system.

Problems sounds like a damaged power pin from pulling or jerking on the AC cable. I use a Cable Retention Device like the one in this video to keep from hurting the pin.