Toshiba 46 in. LED not powering on

SOURCE: Toshiba 42HPX95 wont turn on

I am having the exact same problem with my Toshiba 42HP95. From the information that I have been able to glean from the internet, it looks to be some sort of problem with the power supply or some other component of the power circuit. I am giving up and getting service

SOURCE: 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.

SOURCE: We had a storm come

Hi,
Unplug your unit for 1 hour, before you power it on, press and hold the power button for 1 minute.
If the symptoms still there, then this is an indication that the power supply board was gone to malfunction. Some voltage surge protector is not a 100% reliable because it depends how high is the voltage surge coming from the source and if the design can handle such surged to avoid damaged to the unit. In your case, obviously the surge protector doesn't react efficiently.
Yes this kind of symptoms is quite fixable but needs to send it in because I've suspected that not only the power supply board was faulty but also the mainboard because your direct TV box was also fried which is connected to the TV.
Check if your unit is under warranty/extended warranty, avail it because the manufacturer will fix it for free, but of course don't mention that the unit was fried due to storm. If not, ask for an estimate first for service fee ($300 more or less depends upon the shop) plus parts to have an idea whether to send it in or buy a new TV.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.