Dark background in R220 screen not removed by contrast adjustment

[chukky]

pls guys,
i have this r220 with damagede buzzer. to replace, i had to lift d screen off to solder.
after that the buzzer works but the screen contrast had a dark rectangle and refused to adjust manually.
i changed the screen yet the same thing. now the phone is damaged as u can't see a thing on screen.
plssssssss Help. :mad:

[Jocke]

There are capacitors that controlls the LCD ocsillation and contrast . check them

[fizzo]

without sim card enter "*#0523#" and adjust contrast by upper button may be this will help.

check capastors near by lcd rehot or change.

[rajumobile]

One of the 6 legs of lcd light must have shorted. just resolder them. Also slight rehot the LCD pads.

[btl]

Write Eeprom With Ust6.5 That All

[gibso]

btl idea works very well
just do it

[dayooye]

use btl solution works 100%

[taopheek]

better still u can use vahid sw it has a specific icon for repair battery problem its can be found in multipack
its an old solution
:p

[bruce77]

pls where can i get ust 7.00