Green light flashing under standby light and wont turn on

I have no clue who makes your TV or the model so I can't really help you. Count how many times it flashes and start googling for the answer. Include all the info you can next time.

If you removed power by turning off power itself to the set instead of turning it off by turning the set itself off---that is not a good thing to do.

When power is restored a surge can and likely hit the power supply in your set---time for a tech or shop to open it---I suspect they will find the standby or main power supply is damaged or now bad.

try another outlet if the light still will not turn green you will need to contact sony,
if the light does turn green let me know and we will get this fixed

Issue with Power Innitial Logic Board Relay wont Clik On Due To Damage inside TV... Exemple.. Lamp Projection Burnt Out.. Overheat Component ... All TV Got a Automatic Security Power Off Swich It prevent serious damage insite TV..... Please Refer to a Certified TV Repair Your TV need to be fix ..good luck

Hi,do you hear any strange noises? If you hear clicking or like wanting to turn on it could be the board that powers the lamp it's called the ballast. But if you don't hear any strange noises,tv is around 6000 hrs,2-4 yrs it could be time to replace the lamp.The lamp you need is XL2100 you can find it here http://www.discount-merchant.com/Sony-XL-2100U-TV-Lamp-p/sony_xl-2100u_replacement_lamp.htm?Click=48173 .Have a blessed one!

YOUR LAMP HAS GONE OUT YOU NEED TO REPLACE IT

Here's an excerpt from the Sony Manual online. And the link - http://esupport.sony.com/US/perl/webtree.pl?template=EN&mdl=KDF55XS955&content_id=68&category_id=11&problem_id=52

The POWER/STANDBY (red) indicator flashes three times
If your power/standby indicator is flashing in a pattern of three flashes, this may indicates that the lamp cover is not attached securely. Follow the directions in the Operating Manual under changing your lamp that related to closing and securing the Lamp Cover. Ensure that the Lamp Cover Door is securely fastened by tightening each screw.

The POWER/STANDBY (red) indicator flashes continously
If your power/standby indicator is flashing continuously, and the lamp cover has been secured, your TV may be in need of service.

The POWER/STANDBY indicator is lit up green (not flashing)
A sustained green light indicates your TV is on.

The POWER/STANDBY indicator is lit up red (not flashing)
A sustained red light from your power/standby indicator simply indicates that your TV is in standby mode. This shows you that your TV is ready to be turned on with the remote.

Is it the power light and not the lamp light? If the lamp light is flashing then replace the lamp.

The signal processor has failed and needs replacement.

I have the same problem , i will try new batteries and a new ac box. my email [email protected] let me know what you think?