Samsung MP3 LED

Probably the display is off. Go to Settings and change 'Display Off' setting to 'Display On'. I have attached a link to a PCMag review of your player to help you.

Samsung YP U3

This problem, from your description, is very unlikely to be because of a change in your settings, if nothing happens when you try to turn your computer on.
If no power is being supplied to your computer - no lights come on - then
you might just have the combination of a flat battery and a faulty power adapter. You must test the power adapter (measure the output voltage with a voltmeter) or obtain another one (preferably temporarily/borrow) to see if your computer will turn on with that. If your power adapter has failed it must be replaced. If still in warranty, Samsung or your retailer/dealer should replace it at no cost. (you should not attempt to repair a power adapter)
Otherwise (or even as a first step) I suggest you contact Samsung support by email or Live Chat (details are on this
http://www.samsung.com/in/support/model/NP-R428-DA01IN
webpage.) Please have your computer's model number, serial number, operating system and other details to hand (the numbers
can be often be found on labels on the case of your PC)

18.April.2014

hi;
when your LCD TV wont start , even if you press the power button , it has a power supply failure, maybe some capacitor has bloated or changed value, try to watch this http://www.youtube.com if you know how to solder, or even disassemble the back of LCD TV. if not try to call a repair technician. thanks ,, hope this help........

HI,
Please check your power switch for malfunction.

instalation

change capasitor(all of them)!!

it does not seems to charge / or turn ON either from the computer or when plugged to an electrical outlet to the wall. Red light is still ON after the whole night . What's wrong ?? Can you please HELP - CODY STELLER MINE IS A 4 GIGA BITE MP4 PLEASE HELP ONLY

hold the last button

Change or recharge the battery. Just put a new battery into a friend's Aigo A215 and it now stays on

it wont turn on