NO POWER. DID I CHECK ALL POWER LINE AND PARTS, BUT WHEN I PRESS THE POWER BUTTON, NOTHING HAPPEN. ALSO, DID I CHECK THE 2SD1880, AND IS BAD. JUST SAY ME,IF I HAVE JUST TO REPLACE THESE PART TO SOLVE THE PROBLEM.

check for blown fuse in panel but more likely a bad door switch

plug where Check for loose power where power cord connects.
A computer repair shop can replace the power on/off button and he power plug input jack if required. Make sure the laptop power charger has the correct voltage for the computer if it is universal power supply/charger.

One of the voltage supply lines has probably gone bad and most likely will need a replacement power supply.

try to press and hold Fn and F8 - this is to toggle screen setting to ext and back to LCD on laptop. if nothing happens turn off computer by pressing power button, unplug the ac adapter, remove the battery. remvoe residual electricity from computer by pressing power button 10 times. just plug again the ac and leave the battery out. Pres and hold the letter D and while holding that press the power button once and release both of them. it will perform the built in self test on the lcd. if nothing happens, turn off computer. press anf hold Fn and while holding it press power button. it will perform diagnosis on computer. if still nothing happens need to repalce motherboard and LCD.

There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

The convergence amp IC's are bad (STK 392-110) Replace with the Sanyo Type STK 392-120. Also check for burned resistors in that same circuit. Check them with an ohm meter to be sure because sometimes they look OK by appearance .

check starter solenoid.see if getting power to starter side when pressing button .if yes check if power to starter w/ test light when pressing button.if power there check starter,also motor, will it turn manually or is it seized.if no power to starter side of solenoid, jump across solenoid posts w/ a large screwdriver -motor will probaly turn over,w/ key on.if small wire to solenoid has power when pressing start,solenoid bad,if no power, wiring or start button bad.

it sounds like the chassis has gone bad. check out www.tv-techs.com

THIS IS A BAD RECORD BUTTON U MIGHT ONE TO CHECK FOR PARTS AT WWW.PARTSTORE.COM