Emerson lc320emx trouble turning on

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. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/
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.

No. i think you have a power problem the switching power supply of your tv is damaged. But you can try to reset it if you know how.

It sounds that the main digital board has damaged. 12 blinks indicates it. if you wish to know more check this link for more details about 12 blinks to Emerson TVs

Sounds like capacitor/s failing on the power board. This is a common issue and there is lots of literature and even videos on how to perform the repair on web. A shop will charge upwards of $200 for this repair yet if you find the components and only have them change those; perhaps they will work with you on cost. GL!

I had this problem with the LC320EMX, after extensive searching on the internet, I found a solution. The TV has entered some kind of test pattern, to escape from the flashing color test pattern do the following:
While the screen is changing from red,green,Blue,White, & Black, and is Unresposive, Take your factory remote, Press the up arrow, then the down arrow, then (ON THE TV) press the power button. Turn the set back on and it should be functioning properly. (BTW: the set gets into this test pattern if you press too many buttons on the remote, or if you use a universal remote with the wrong code)

one of the transformers has an issue which is very common for that model. You can get a replacement inverter from www.tvrepairworld.com

Please ignore the first solution as that blink code definition is for a Sony CRT based set, NOT an Emerson.

Carefully examine the LCD panel itself with a flashlight and look for small cracks. Based upon your description of events, I think that the panel is actually cracked. This usually only prevents a picture from showing. The red lights are an indication of an internal problem and the set is in shutdown to prevent further damage.

Without seeing the actual unit, I cannot make a definite diagnosis, but I would initially suspect a power supply problem that may be relatively cheap to fix. If the set is relatively new, I'd invest in a detailed repair estimate. Post the info here from that estimate and we may be able to walk you through the actual repair.

Dan

Sorry about that. When the tv goes bad like not turning on, the green light will blink, and goes right back to red standby light while the dtv letters will briefly show on the lower right of the tv screen, then go back to blank screen. The tv will need to be taken to an authorized service center for repair. Common causes are a bad inverter/power supply, power control board, or circuit board.

Mine stayed in stanby mode and all I had to do was to switch the plug to a different outlet. The power strip it was on wasn't providing enough power. It worked fine for a month before I had a problem.