How do I change the channel on my Emerson LC320EM3FA 32" flat screen TV? I've tried the auto programming that does not work. When I press the channel button on the TV, it just changes the source of the TV.

SOURCE: my flat screen tv does not have a picture or

I've had the same problem with a 32" model LC320EM82S. All the Emerson TV ( no matter what size ) are having the same issue.
I'm sure with your TV, the green light is blinking before the TV automatically turns OFF. Basically, the TV is trying to power up the screen and has failed. Protection mode turns the TV OFF to prevent other parts from being damaged inside.
My solution for fixing my TV was replacing one bad inverter transformer of six on the Backlight Inverter/Power Board. Here is what my board looks like:
You can see the six inverter transformer on the bottom of the board. It's what supplies power to the screen. Your board may look similar. You can sometimes find a whole replacement board over the internet for a good price. Shopjimmy.com is a good place to start. Just start searching by your TV model number.
If you have some electronic experience, you can repair the board itself by finding a Service Manual over the internet for less than $20. It will have all the part numbers, schematics, and diagrams you need. I would investigate the inverter transformer for your problem.
I hope I helped you out with your problem.

SOURCE: remote control code for 32 inch lcd EMERSON TV

I succeeded is using the DirectTV remote control for the Emerson 42" plasma TV, by using a Samsung code. On my TV, was 10060. If this one does not work, there are a bunch of others that might work. Good luck

SOURCE: Sceptre 32 tv won't turn off or change channels,

I have the same problem, did you ever get this fixed?