The solution above will show us a particular hardware components that holds and control the display data signals on nokia asha 501 which enable the LCD screen to work.
Hints on troubleshooting touch screen failure on Nokia Asha 501
This will work if you already tried replacing the touch screen module and restoring the device firmware.
1.Check/clean the touch screen pin connector, re-solder it if necessary.
2. Trace the RESET and PINT DAV line paths. apply a jumper if connection is open or cut.
3. Rework, re-ball or replace the Touch Controller chip.