LE40D550K1WXXC NOT START

[rvrpcr]

Hi to all. I'm italian, and im sorry for bad english.
I say hello for everyone who read and help me with this problem.
Last night i'm entered in service menu with info+menyu+mute+power on
and i changed an information that i not remeber, because i'm at telephone
tv stop responding by the remote and keys onboard, but images and sounds are ok
but there are no mode to exit from the menu, and no mode to shut down the tv, well i pulled out the plug
from this moment, my tv wont start, the red led not blink, the tv dont show images but i can hear the channel sound
there is a way to perform a factory reset from inside of pcb?
the information i changed shuold have to do with "nicam update" i remember now...
thank you for the help!

[zoelechat]

Are you sure of "nicam"? Isn't it "micom"?

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