Panasonic KX-TPA50 earpiece speaker
 

For benefit of the archives...

I just finished repairing a Panasonic KX-TPA50 handset (it's a
cordless handset for their KX-TGP500/TGP550 voip base station).
Symptoms were no sound from the earpiece (although sound was
OK in speakerphone mode).

Resistance measured across the earpiece terminals on the circuit
board was infinite. The number on the existing part (sorry, I didn't
write it down) didn't lead anywhere.

The earpiece speaker is round with red/black wire leads attaching to
the circuit board. Diameter is roughly 15mm. Thickness is about 4mm.

Digikey carries several of these. I got the Soberton SP-1304
(P/N 433-1095-ND), a 32-ohm speaker 13mm in diameter and 4.2mm thick.
Leads were only about 3cm long, so I retained the existing leads in
the handset and spliced the new leads in. There was a small adhesive
foam pad on the back of the original speaker which I carefully peeled
off and transferred to the back of the new speaker.
--
G. Paul Ziemba
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