Solving The Ringer/Speaker Problem In Mobiles

Hello to all! Today we'll discuss about the audio problem in phones. In this case we'll consider a phone whose speaker &...

Hello to all!

Today we'll discuss about the audio problem in phones. In this case we'll consider a phone whose speaker & ringer isn't working. For e.g. when you try to play music or a video then the phone doesn't give any sound and when someone tries to call you on your number then the phone doesn't ring as well.

As usual we'll first proceed with the basic (yet important) steps.

  • In this situation, we'll first check from the settings menu to confirm if the volume is full or not. If this doesn't help then,
  • We'll check if there is any loose connectivity between the phone's speaker and the speaker's tips.
  • If the connection is okay then we'll use our multimeter to check the deflection on the speaker's tips.
  • Okay Condition - If you get same deflection on both the sides of the speaker's tips then it means that the speaker's track is in okay condition.
  • Open Condition - If you check the tips and don't get any deflection on both of them then it means that the speaker's track is in open condition.
    • In open condition, you need to check the internal track or the components in the series track to find out the component which is open (meaning faulty).
    • After finding out the 'open' component you need to use a jumper wire to connect the disconnected points.
  • In a speaker's track there are mostly coil and resistors where are nearby speaker's tips or near to IC.
  • Shorting Condition - Suppose you find a shorting condition while checking the deflection on the speaker's tips then in this case you need to remove the components that are there in a parallel track and then check each one of them for shortage. After finding out the shortage components you can resold the other components back to their places and can replace the faulty component with a new one.
  • If after following all the above steps you still get the same problem then most probably the fault lies with the Audio IC. So in order to get it fixed you need to do HRC (Heat Reball Change) on Audio IC.
    • Note - In most of the Nokia handsets the Audio section is inside the Power IC.
    • If in some mobiles you do not find Power IC and in those sets Audio section is inside a CPU.
  • An 8 pin or 9 ball Ringer IC is used for a Ringer.

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Homies Hacks: Solving The Ringer/Speaker Problem In Mobiles
Solving The Ringer/Speaker Problem In Mobiles
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