ok i done what you sad but same like befor. i hold it for about 10 -15 min but online the 3rd led left flashed red
I'm sorry, I don't understand what you're saying exactly - perhaps your spell-checker has replaced 'only' with 'online' then it would make sense.
The procedure I proposed should indicate almost as soon as you connect the power whether it's a battery connection issue or not - the green light far right should turn on, indicating the system is booting up (or online, if you leave it long enough). If that doesn't happen, as it sounds, the cause could be anything from merely a broken power LED to software corruption to a duff battery or probably any number of other issues. I'm afraid the test I suggested hasn't narrowed down the options much.
If you want to test this further before admitting defeat, simply having the lid open while repeating the test and observing whether the LCD lights up should eliminate the possibility that your power LED is broken, unless your LCD cable is also browen, in which case it's definitely a situation where you should send it for repair. To eliminate software corruption, I guess holding down the R shoulder button while applying power should also light the screen without depending on the software OS (and bring up the boot menu). If your battery is broken, there are ways to bypass the battery and run purely off the charger port, as documented in the hackers guide, but that's also cause for sending it for repair.
In short, if you can't get the LCD panel to light with the lid open and with the battery securely held and power applied via the charging port and the R shoulder button held, you're probably better off sending your unit for repair - it's beyond the scope of anything I could suggest you try out from here to repair it yourself.