My Psp Is Broken, It Turns On But You Can't See Nothing In The Screen. Can You Help?

Another thing you can do is try to reduce the number of possible problems:

1. When the unit is on, a game UMD is in the unit (with no memory stick), and you press the right D-pad button several times, then press the left D-pad button once, and press down several times, then wait... Do you hear the demo sound from the game inside? Or, if you have the button 'click' still active, do you hear it making that sound when you push the D-pad buttons? If so, your unit is working properly, you simply have no display visible. Go on to #2.  If you get no sounds from it, no matter what you do? This implies the entire unit may be dead, and will require major repair that may exceed the value of a new unit. You may as well stop here and head to the aforementioned sony dealer or repair shop.
   
2. Turn the unit on in a dark or darkened room. Does there seem to be a glow from the screen? If not, one of the problems is that the backlight is out, or no longer connected properly. Knowing that much helps, now we'll move on to see if the screen is actually working properly. Go on to #3.
   
3. Use a lamp or other focused light source, and turn on the unit with the lamp shining directly on the screen, but with the screen turned at enough of an angle that you don't see the light reflecting off the outer screen lens (the clear cover built into the face plate of the unit). Once enough time has passed that the boot process should be done, press the D-pad buttons several times left, then right. Do you see even ghostly movement on the screen? If so, the problem is entirely the lack of a backlight, and you can try to service it yourself to see if it's just a dislodged connection, or simply assume the light unit is out, order a new one, then install it when it arrives. This WILL require you to open the case and remove some components, and will, of course, void any warranty you may have. Now, if you have warranty time left, contact Sony and see what they will do under warranty, and what you have to do to take advantage of it. If not, then you will either need to have a professional fix it, or take the plunge yourself. However, if you don't see any light in a darkend room, and see NO movement on the screen whatsoever, but there ARE lights and/or sound indicating the unit is trying to work, then most likely both the backlight AND the LCD are dead. These can be replaced with aftermarket parts, just search online and decide if the cost is worth it, or if you should just buy a new unit.

Hopefully, this has been helpful in helping you determine what IS and what IS NOT wrong with your PSP, so as to be able to make an educated decision about how to handle this problem, and if you DO decide to take it to a professional, you'll know how honest they are if their assessment matches your brown... Good luck, and I hope things work out for you...

You should go to some Sony store and show it to them instead of trying
to do something yourself. Probably they'll be able to help you with it
although its not sure how much it would cost but you should first go
and find out if they can do anything and the cost and if you can afford
it you can get it repaired. Although you never know with these things,
the repair sometimes costs more than the actual product but you can go
and check out for yourself.