I tried it, but still nothing.
Not sure what you tried, sorry.
I can see my laptop when i connect it to the same hdmi cable,
That’s good. By doing that, you’ve eliminated the TV HDMI input and the HDMI cable as likely causes of the problem. That leaves the Raspberry Pi or OpenELEC.
but not the openelec on the pi.
How to determine that i have bad hdmi plug on the pi?
What Nick says is a good plan; try with NOOBS, and that will help to exclude OpenELEC.
Any other options?
As I said before, try testing the Raspberry Pi with another television. Try reversing the HDMI cable end for end. Make sure it is plugged all the way into the Raspberry Pi.
Don’t just stop pushing because you feel a little bit of resistance, make sure the connector goes fully into the socket, by looking at the socket air vent holes. If you are using a non-standard case check to make sure the connector body isn’t being blocked by the case, because that may prevent the contacts from mating.
Otherwise the next steps for a really technical person involve an HDMI breakout cable, good test instrument and kernel driver debugging to figure out if one of the HDMI pins is broken, or a port pin on the CPU is damaged.
Also, you might borrow someone else’s Raspberry Pi or get another one, just to make sure a firmware update on your television hasn’t made it incompatible with the Raspberry Pi.
Permanent electrostatic discharge damage is still a possibility. If you can’t be sure you’ve followed good practice since the Raspberry Pi was purchased, then you or someone else may have damaged it. Really easy to do, especially on a dry day.