While you wait for answers, we may have found some information which could help you.
Click here for One Number Keypad Not WorkPanasonic cordless phone malfunctioning?
rattling ?
How can I fix the handset display on the KX-TG5633?
Get display back on my panasonic portable phone?
Audio noise (hum) on Panasonic cordless phone?
how to get rid of curser on my panasonic handhled phone?