I can't see any picture but I can hear the sound
If your Xperia Touch suddenly stops projecting an image or video even though you still hear audio, the device might be too hot. That is because Xperia Touch is designed to stop emitting light when it reaches a certain temperature.
Try these methods one after the other. Verify whether the problem was solved after each method, before trying the next one.
- Check if the cooling fan is working by listening for the sound generated by the fan. If the fan isn’t working, contact your retailer or a Sony Mobile repair partner.
Before handing the device over for service, back up all your data to avoid possible data loss. Data on the device may get deleted when examined. Don't forget to bring proper documentation, for example, proof of purchase and warranty card. The documentation required may vary depending on market, country or region.
- Overheating may be a result of accumulation of dust and other particles in the mesh outer cover of Xperia Touch. Use a vacuum cleaner with a soft brush tip to clean the cover from the outside.