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After some time your 3088 Dualphone doesn't make the ringtone. You can't really use that phone anymore. When some one call you, the phone doesn't ring. It's a ...
Open the battery case and remove the battery.
Use a star screwdriver size 8 and remove the 2 screws
Take care when you open the case. They are 2 extra clips on each side. Open it slowly, the inside parts are just placed inside.
You can now see the voice speaker on the top right. And the voice microphone at the bottom of the keyboard. You can remove the keyboard. Take a ...
To have access to the ringtone speaker you need to remove all the electronics. Take care of the 2 charger pins at the bottom. and take care also ...
Now you can see the ringtone speaker. That's the big speaker glued on the back. It's a 8 Ohm speaker. The diameter is a little less than 30mm. ...
Remove the glue with a sharp knive. Take the time to remove all the glue. Then remove the speaker and cut the wire.
Place your brand new speaker and glue it. Put glue on the border, and try to avoid to glue the front vibrating part of the speaker. Let dry ...
Solder the speaker's wire. Isolate the whole wire to avoid any short-cuts.
Put back everything in the box. Read the previous steps in the reverse order. And put back the battey. Now your Dualphone 3088 is repaired. You can check ...
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