Lg 32lv2500 power light blinks red twice and then stays amber

Hi, Do you have a make and model number for this TV?

suspect either a back light power board issue or main power board to back light board issue...also, is it under warranty ?

It sounds like a panel fault. If you wish to get more details, check the site linked here. http://electronicshelponline.blogspot.com/ Selecting the view option, either to Mosaic / Time slide, can be selected by the drop-down list, at the top left of the display window, will make surf easy. You can also do a search, by type in the brand name/model number/IC used, in the search box at the top right of the display window.
Screen-shots to defective LCD panel are given.

Sounds like the power supply is overheating.

Hello!
HDMI blocked could mean, that one or more HDMI inputs are turned off. In WD- series DLP TVs it's possible to disable one or more inputs, which are not to be in use, to speed up signal source switching. Most of modern sets are constantly monitoring inputs and automatically recognizing "plug"n"play" signals. blocking any input would not cause TV to shut down.
Yellow(amber) light means: lamp door interlock switch is off or malfunction. green blinking: set is initializing, about to begin normal operation. So: quite possible that lamp has been replaced incorrectly or door is not tight intermittently. Last possible issue: door's interlock switch is bad. Take lamp door off and you will find the switch with blue lever on the left side of the door inside plastic compartment. Push it with your "pinky" or pencil carefully, then ask someone to turn set on. Make sure, yellow light is off, before do so. If set starts normally, observe lamp's activity: it should stay on and getting brighter, while you holding switch. If lamp stops working, while there is no "amber" light, then TV shuts off, red blinks, lamp is bad. I just had to replace lamp twice, due to defective batch of lamps with housing. 3rd time I replaced bare bulb and it solved the problem. But there was no "amber" issue!
good luck,
Alex.

I need to know titles of lights that blinks on tv while it trying to power up. There are Power, Lamp and Temp lights, let me know what light blinks, this will help me to diagnose the problem as I hate to guess like try this and try that.
Thanks.

http://www.sonya20tvclassaction.com/main/home.sfx MAKE SONY FIX IT

Are you putting the lamp cover back in place before trying to turn the set on? The 2 blink error is a temperature error you might want to check the thermal sensor, is your lamp door warped?

Thats great, Please rate solution.

i have same tv, this i was i did on mine. on the sky+ remote push tv and then press select + red button at the same time, the red light blinks twice, then push 1174 then power button.