Micromax Q427+ - Touch panel is not working; Touch Panel Troubleshooting

Q427+ L3 Service Manual
5. Touch panel is not working N/A
 Flash the handset with latest SW
 Check the connect ribbon cable saddle normally or not, Re-assembly TP.
 Check the TP connector work normally or not, Re-Solder TP connector or change it
 Check the CPU work normally or not, Re-Solder CPU or change it
TP connector
CPU