Cannot turn on power.

Try following the steps below.
Step 1
Press the power button once. If the TV does not turn on, observe the LED indicator, usually located on the TV's lower front panel. If the LED indicator turned off after you pressed the power button once, it is in standby mode. Press the power button once again to exit standby and turn on the TV.

Step 2
Observe the Standby light if the remote control will not work. If the Standby light stays on, the television is in Standby mode. Press the power button on the television, then try to use the remote.

Step 3
Turn the Energy Saving Switch off, then press the power button. The Energy Saving Switch is located on the rear or side panel on most Sony model TVs. Refer to your TV user manual for the exact location of the switch.

tis a process so here goes..... Central Security Module (CSM) enable/disable mode allows autolock feature to be turned on or off. To enter enable/disable mode, close all doors. Ensure ignition switch is in LOCK position. Perform the following steps within 30 seconds:

Turn ignition switch from LOCK to RUN position.
Press power door lock switch UNLOCK button 3 times.
Turn ignition switch from RUN to OFF position.
Press power door lock switch UNLOCK button 3 times.
Turn ignition switch from LOCK to RUN position.

CSM module should chirp horn indicating CSM module is in enable/disable mode and ready to accept program changes.

Press power door lock switch UNLOCK button once to command CSM module to toggle autolock feature on or off. Press power door lock switch LOCK button once to enable/disable autolock feature. CSM module will chirp one time to indicate autolock has been disabled.

CSM module will chirp once, followed by a longer chirp to indicate autolock feature has been enabled. Press power door lock switch UNLOCK button once, then turn ignition switch to OFF position to exit enable/disable mode. CSM module should chirp once to verify a feature change. Best to you.

You may have main board issues. Maybe Try error code reset.
Open front door and locate main power switch on the bottom left and turn off.
Press and hold the reset button , button on control panel.
Turn main power switch back on whilst pressing reset.
after 1 - 2 min a white screen with 1 button saying"error code reset will appear , let goo of reset button.
Press error code reset and then turn main power switch of for 20 seconds. turn main power switch.
If code returns contact me on my phone to discuss

I believe it might be in manual also. Here is instructions.
Switch the display to the trip meter "A"
Turn the "POWER"switch off.
(If you have push button start)
While pressing the trip meter reset button turn the "POWER" switch to ON mode (press power button 2 times, foot off the brake).
Continue to press and hold the button until the trip meter displays "000000"and the multi-information display indicates that the reset is complete. or you here a beep.

Hi, try these. press power and volume down button for 10 sec. Then try to power up it by briefly pressing power button. if fails, press power and volume up, be carefull , when the screen comes live - not to select any other option but only normal boot. To select a option press volume up button, it will power off, then power on again by pressing power button. it may fail by keep trying and in between keep charging ..
Thanks

Try this reset, it may work:

-Turn Off power switch
-Select 90 degree washing
-Press and hold Start
-Turn ON power switch and keep pressed Start button 10 sec
-Depress Start button
-Turn Off power switch and turn On again and thats it...

Credit to original poster :)

Please check whether the laptop power button may be in the pressed mode.. please release the key. If the key is not released after you pressed the power button, the laptop will power off.
Clean the power on button.
Hope this works..

Turning the Display On and Off
There is a power switch on the bottom of the display and a power button on top. The power
switch is used to cut off power completely, whereas the power button turns the screen off but
allows the remote to continue working.
To turn the display on:
1. If the power light on the front of the display is off, turn on the power switch on the bottom
of the display.
2. Press the POWER button.
To turn the display off:
1. Press the POWER button.
2. If the display will be unused for an extended period of time, turn off the power switch on the
bottom of the display and disconnect the power.


Allso go here for full manual:

http://www.retrevo.com/search/v2/jsp/mytrevo/myTrevo.jsp?page=man

FACTORY MODE:

Turn ON and OFF the Power Switch while pressing the MENU Button. Turn ON the Power Switch again while
pressing the – Button and you are in the Factory Mode. The following menu appears on the screen when you
press the MENU Button. Turn OFF the Power Switch to exit