My Toshiba regza 46" doesn't

This specific model of Toshiba television decided to re-introduce the FULL POWER DOWN feature in order to provide an energy-efficient alternative to turning off the TV.

On the right-hand side of the screen, there is the panel of buttons including the channel, volume, and the STANDBY button.

On the left-hand side of the screen, there is the FULL POWER DOWN button.

Try using either of these buttons to power on your TV.

Hi,
Here are some basic steps that will help you fixing the problem.
I'm assuming that your unit is dead set without an standby LED light and your outlet is live.1.Power cord -check the cord it might be opened (no continuity).This is due to frequent bending,pulling.2. Power switch- check for dry joints, open contact.3.Check the internal fuse- sometimes the fuse fail because of thepower surge, replacing with new one will cure the problem, If this is the case I would advice you to use surge protector/AVR (Automatic Voltage Regulator). However if the fuse blew again this is an indication that you have ashorted partsin the power supply, you may visit the linkhttp://www.fixya.com/support/r8053361-fuse_keeps_blowingfor more info. If no reaction and still the unit didn't power up then you have an open parts on the power supply.
4.If you see that the fuse isintact, don't attempt to touch anything because there somefatalcomponents stored electricity enough to hurt you with a simple mistake only. I would advice you to look fora professionalto troubleshoot the power supply. If you want to repair it yourself make sure that you have necessarytools and test instrument. First checkbadsolder joints(re-solder all cold solder),leaky electrolytic capacitor(sometimes it hasbulgedat the top but not all, you better have a capacitor checker), open/shortedregulatortransistor/IC(mounted in heat sink),open fusible resistor(caused by shorted regulator Transistor/IC), shortedzener diode.
You may also replace the power supply board, try online like ebay.com and shojimmy.com.
Also check if your unit is under warranty before opening the back panel, it will void the warranty. Avail it because the manufacturer of your unit will fix it for free or a little charge only.
Hope I helped you.
Have a nice day!
Thanks for using fixya.
JDVillanueva