Hello,
i have weird problem with lcd brightness, I use this tutotial:
http://www.ladyada.net/learn/lcd/charlcd.html
And the result is first 6 characters of row 0 and 1 is with very lower bright than other part of viewing area :-?
Can you help me?
Make sure in the lcd.begin(); you put 16,2 and not 6,2 
lcd.begin(16,2);
Is what you want.
Hello,
the problem is brightnes of first 6 characters of row 0 and 1, not the starting point
It sounds to me like some of the backlight LEDs have gone. Not much you can do about that. On some designs you can remove the LED panel but it is messy at the best of times.
Make sure in the lcd.begin(); you put 16,2 and not 6,2 Smiley
lcd.begin(16,2);
Is what you want.
How could this possibly have anything to do with his problem. If you look at the source code for the current LiquidCrystal library you will see that it does not use the first argument of the lcd.begin() function. As far as the second argument is concerned, the library only checks to see if it is >1.
Don
Grumpy_Mike, there is a text, but its a very, very light.
What about soldering problem, i check the connections but nothing strange
Sorry this sounds like a hardware fault on the display. It is likely to do with the way the LCD connects to the electronics. These are all sealed up and if you crack them open there is little chance of getting it back with any sort of functionality. Do things improve when you squeeze the display?