My power button come on and off and i make sounds 4 times my screen is not working too.

ADJUSTMENT

1. Turn on the power switch while holding down the start/stop button, backtack button, and

NP button simultaneously.

2. While holding down the start button, press the + positions 1, 2, 3, 4 and 5 on the screen in

order. If the buzzer sounds once when 5 is pressed, the position is okay. If the buzzer

sounds several times, the position is erroneous; therefore, adjust again. (When pressing

the screen, use a pencil (or match) with a round tip.)

3. Turn on the power again, and confirm that the screen display and touch panel positions
match.

While viewing the screen you wish to capture, press the home button and the top power button at the same time. The screen will quickly flash and you will here a sound like you just took a picture.

try to reset it by removing the batery and the power cord an pressing for 30 sec the power button; if is not working maibe you have la faulty LCD inverter and msut be changed.

Assuming you are using a windows operating system, go to the control panel under the start button. Find power settings and turn off hibernation mode. Sleep mode should be ok. Additionally, on the monitor, find the menu button that pulls up the OSD (on screen display) and see if there is a ECO mode or power saver mode and turn it off as well. Good Luck.

Power supply board have problems.Tries Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Step 1. Turn off your iPhone.
Step 2. Hold down the power and home button.
Step 3. When you see the Apple logo, release the power button but continue holding the home button down.
Step 4. Open iTunes and wait for it to tell you that its in restore mode.
Alternative Method:

Step 1. Connect iphone to USB then listen to the sound when it connect and disconnect.
Step 2. Hold the home and power buttons until hear the disconnect sound then release power button.
Step 3. Wait until you hear another sound then release home button.

I think you need to exchange the Main Board.

Sounds like a disk problem. This might work for you ...

Power off the unit

[Optional step - remove battery and use a pen to push the reset button]

HOLD down the LOCK/TV-LCD button as you press the POWER button until the unit starts to come on.

You should should get options to recover the disk (try this first) or format the unit (try this last).

If that doesn't work i would follow the procedure of reseating the HDD connection - see solution for Recovery error code 2 problem.

Hold down the SCAN and SOUND buttons, located above the sound system power button, until time starts flashing. Underneath the CD Changer buttons 4, 5, and 6 are little letters 'H', 'M', and 'R'. Use those buttons to change the time. Press SCAN and SOUND to complete the time change.

well i think there is problem with ur screen on/off switch and its technical problem just take it to the service centre. and u might wanna check the power cables before that it could be loose and ur signal cable to.make sure its hooked with ur system tightly .pleasure helping u .