Here's the Nokia 2720 fold solution for not working earpiece speaker (receiver) problem. This solution provides some step by step procedures on how to fix and diagnose if such ear speaker problem occurred.
In Nokia 2720 fold, the earpiece speaker is mounted on top and near the LCD screen displays. And also been connected and associated with the LCD flex ribbon cable assembly. Just refer to the solution and follow some procedures below.
Nokia 2720f Earpiece speaker problem solution
Assuming that this problem is not cause by a firmware, so check and flash update the device first to any latest firmware version available.
1. Check the earpiece speaker using a multimeter, replace if damaged.
2. Check the Flex ribbon cable wire for possible damaged, replace if necessary.
3. Clean, the LCD pin connector, re-solder if the solder is lifted.
4. Trace the connection line paths of the earpiece speaker from the pin connector down to the bypass capacitors., check or replace also the capacitors.
5. The earpiece audio signals is feed from the LITEPLUS IC, there is a possibility that the problem is cause by this chip, reheat or rework it then replace if necessary.
That's it! Enjoy.
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