Power light blinks 3 times but it does not come on

3 blinks can be several things, but generally is power supply failure, test the various voltages in the power supply.

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electronicshelponline.blogspot.com/
http://electro-medical.blogspot.com/
Blinking codes details of many popular brand TVs are given. Surf the site with patience.

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.

Blinking of power light is fault indication. From the number of blink that occur at one time switch ON, you can get an idea about the faulty circuit side. These are called blinking codes. To know more about these blinking coded, visit the site. It has details about blinking codes to many brand TVs. Pull up older posts. If you check the site in Timeslide option, which can be selected from the dropdown list at the top left side of the display window, it will make search easy.
http://electronicshelponline.blogspot.com/

3 blinks 3.3v SOS D Board. This is the fault. That's SOS board has the fault. Check this to know more details.

wait for the light to go out then press power. Then if it doesnt power up hold the menu and the Device/input buttons on the set both in together for 5 seconds the light will blink a series of blinks pause briefly then blink another number of blinks then pause then it will repeat the same two digit blink sequence a few times . Let me know the two digit blink sequence.

Hi there,
5 blinks means there is a problem with the video board. It could be as simple as unplugging everything, includding power. Wait 3 minutes then plug power only back in. Or it may be a damaged component that requires replacing.
Hope this helps
TV_Doctors

3 times blink shows lamp cover is removed or not installed properly on TV.
Please take out lamp inside TV and check, seems its broken as you heard loud pop.
Thanks.

Three blinks - B+ over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is also a problem in the power supply circuit, check T603 and R672.

If the front power light is blinking three times then your TV has a problem with the convergence. You can get the correct replacement parts and full step by step photo instructions from www.TvRepairKits.com