X5470 won't turn on.

test the power cord+ outlet for faulty with multimeter. However if this things are o.k You must test the power supply pack for faulty, test the 5 vdc+12vdc, etc and see if there are Faulty. and replace. Please tight cable or connector inside. Test too the small battery for CMOS for +3vdc and replace.

God bless you

It could but it could be about 50 other things as well. You have a voltmeter, and know how to use it? going to need a service manual as well.

First, you'll need to make sure you have the proper voltage at the outlet, and the power cord terminals fit tightly into the outlet slots. Based on your post, you most likely have a faulty electronic control board.
Here is the board to order.

I doubt there is battery problem, have you tried switching on laptop without battery and connecting through the laptop charger? most probable your battery is not taking the charge. so suggest you to disconnect the battery and try using laptop with charger then you'll find the problem.

USE IT WITHOUT THE BATTERY AND REPLACE THE BUTTON

Please try the steps below:

1. Re-brick your printer. Pull out the power supply, black box where the power cord is plugged in at the back of the printer.
2. Disconnect the power cord from the power source. Re-connect after 30 seconds to a different known working power outlet. Bypass any power surge devices or power extensions/strips and directly plug in the cord into the power outlet in the wall.
3. Re-plug the power supply into the printer.
4. Press the power button if the printer won't automatically power on.

If the problem continues, please contact Lexmark Technical Support for further assistance. Thanks.

After connecting the AC adapter to a wall outlet and to the computer press the power button the right side of the inspiron. The button itself should then lite up white if the power adapter is good. If not, check the power outlet you are using. Plug in something else and see if it works on this wall outlet. Some outlets are connected to a wall switch. If its still a nogo you may need to replace the AC adapter.

TV won't turn on • Press the TV button. Make sure the TV is plugged in.• Check the wall receptacle (or extension cord) to make sure it is "live" by plugging in something else.• Something might be wrong with your remote control. Press the POWER button on the front of the TV. If the TV turns on, check the remote control solutions on page 26.• The front panel controls may be locked (disabled). Use the remote control to unlock the front panel controls by selecting the Lock Fr. Panel in the PARENTAL CONTROL menu and press OK (box won't have check mark).Buttons don't work
• If you're using the remote control, press the TV button first to make sure the remote is in TV mode.• The front panel controls may be locked (disabled). Use the remote control to unlock the front panel controls by selecting the Lock Fr. Panel in the PARENTAL CONTROL menu and press OK (box won't have check mark).• Unplug the TV for two minutes and then plug it back in. Turn the TV on and try again.TV turns off unexpectedly • Sleep timer might have been activated. Go to page 24 for instructions.• KidPass might have been activated. Go to page 21 for instructions.• Wake-Up timer turned on the TV and no remote or front panel buttons were pressed for two hours.• Electronic protection circuit may have been activated because of a power surge. Wait 30 seconds and then
turn on again. If this happens frequently, the voltage in your house may be abnormally high or low.
• Unplug TV. Wait five minutes. Plug it in again.

Try to unplug the power adapter from the printer. Unplug the power cord from the power outlet in the wall. Replug the power cord after at least 10 seconds - bypass any power surge devices or power strips. Replug the power adapter into the printer. Your printer should automatically power on, otherwise, press the power button. If the printer still won't power on, please contact Lexmark technical support for additional assistance.

Hi,

Try the resetting the printer to factory defaults.

Steps:

1.Turn the Printer OFF, unplug the power cabled from the back of the printer and from the wall outlet.

2.Then, Press and hold the ON button for 30 -60 seconds

3.Take the Ink Cartridges out, Unplug the printer power cable while its ON, press and hold CANCEL and COLOR COPY button and connect the Power cord while holding the buttons.keep Holding the buttons until the printer goes off ,release the button and Push the ON button.

Please let me know, the status. GoodLuck cheers!!

Thank you ...