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Fault diagnosis

Answer a few questions to narrow down the cause. The steps follow the order technicians actually use: rule things out from the outside in, from cheap to expensive.

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What to do

Capacitive touch is very sensitive to water and coverings

  1. Dry it completely, including the bezel around the screen edge
  2. Remove thick films — anything over 1mm blunts capacitive touch
  3. Users wearing thick gloves need glove-capable touch or a resistive screen
  4. Some machines have a water-rejection mode that ignores touches caused by water

Need someone to take a direct look?

Describe the symptoms and what you have tried — an engineer will call back to help.

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Symptom: Capacitive touch is very sensitive to water and coverings

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Before opening the machine. Disconnect power, wait for capacitors to discharge, and photograph the current wiring. If the machine is under warranty, call us first — opening it yourself may void the warranty.