- Local oxidation of touch sensor circuit leads to uneven signal output;
- Loose or bent FPC flex cable causes intermittent signal interruption;
- Electromagnetic interference from damaged shielding layer leads to line jitter.
- Graded Hardware Repair Process.
- Cable fault: Re-weld or replace flex cable, low cost and fast effect;
- Sensor local fault: Micro-repair for small-area damage;
- Severe damage: Replace complete digitizer assembly for stable effect.
- Supply model-specific FPC flex cables, shielding copper foil and welding tools;
- Provide technical operation guidance for bulk cooperative repair shops;
- Small-batch mixed procurement is supported for trial use.