My bravia will not stay on. - Sony Bravia KDL-46VL130 TV

J, it sounds like it may not be getting any input from cable or satellite, try switching cable and inputs around, try VCR or DVD player. You may need a firmware or software update.
Some forums say to unplug and wait 10 min. then it resets.
Check links below.
Sony eSupport KDL 32NL140 Support

Stuck with initial setup screens on my Sony Bravia 4k Android TV

Stuck with initial setup screens on my Sony Bravia 4k Android TV

does the lamp fan stay on? you can see thru the back if the fan is running. If it is not running you need to replace it.
If it running you may need a new lamp driver/ballast part# 1-480-180-21 https://www.encompassparts.com/model/SONKDF46E3000/_/_/Sony/KDF46E3000/

then there is the possibility the new lamp is bad,, Sony's like Sony OEM lamps

Sounds like a power board reset switch gone bad. Have the power board replaced.
Good Luck Ed Pinero

Well I just changed the resolution settings in my android box to 720 from 1080p > plugged it in and my box now works...simples.

Can you recheck the model number. I cannot find this model.

Thank you for your Help. I was able to return the product and exchange it for a different Sony model.

power supply/ in uk look up ohm supplies to repair it

call a tv place and order a lamp for it if your not old to lift it

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary. .

If you can bring up the TV menu, it's probably the video board. If the won't come up, it could be the LVDS cable or the LCD panel. Either way I recommend a qualified service tech take care of this.