In white screen problem like there is no welcome tone, or any sounds can be heard on the phone, you may work at software or firmware flashing, this also be done on blue screen problems.
If the white screen displays but you can still hear a tones on the device, this may work as well.
On Nokia C3-01 there are two ESD/EMI filter IC used in the circuit, once if being faulty due to a water or wet damaged, it will result to a display problem situation.
Nokia C3-01 Display Problem Solution
Hints in troubleshooting Nokia C3-01 Display problem:
1. Try to replace the LCD screen module.
2. Try to restore, flash update the phones firmware. Its RM 640 for C3-01 and RM 662 for C3-01m
3. Check/clean the LCD pin connector.
4. Check read the VAUX 2.78V and VIO 1.8V, and the components like the capacitor and filter coil on it.
5. Replace the EMI/ESD filter IC's,