Tsp; Touch Screen Does Not Work - Samsung GT-i9100 Service Manual

Level 3 Repair

8-3-9. TSP

Touch Screen does not work

Check TSP Connector on
Check the TSP connector on
U704 Pin 6 = 2.8V(C718)
and Pin 8 = 3.3V(C719)
Check the I2C signal(R426,
R427) and int signal(R702,
Replace LCD Module
Yes
Main PBA
Yes
LCD Module
Yes
Yes
R704)
Yes
Yes
END
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No
Reconnect the HDC701
No
Reconnect TSP Connector
No
Resolder or Replace U704
No
Resolder R426, R427, R702, R704
8-30