Sony SPP A972 Cordless Phone Logo

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Posted on Feb 18, 2018

Sony SPP A972 Cordless Phone Dislpay error

Just installed a new battery nd the display screen reads:

S/C INVALID!
TxPwr: _ Ch:05

I tested the new battery and it it gives out 3.8 - 3.9 VDC. None of the keys on the phone respond except the # key which will change the channel. Any suggestions?

  • RTMJMM Apr 06, 2009

    Same as Thomsonb.

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2 Related Answers

Anonymous

  • 5158 Answers
  • Posted on Sep 18, 2008

SOURCE: cordless phone doesn't work

S/C INVALID.

It means the security code is invalid. The phone & base are not talking to each other. do you have the manual for the phone.... check that the number you have i believe it was 20 is the same as the base. generally to reset the security code you just place the phone into the charger.... the base not the spare charger for a couple seconds... you will see the light on the base flicker. it should work then..... this can't be accomplished by using the spare charger if in fact there is a spare.


Robert

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leethedeuce

Lee A.

  • 4472 Answers
  • Posted on Sep 18, 2008

SOURCE: cordless phone doesn't work

How long have you owned the phone? Once I have the needed information I can recommend the best course of action. Please don't request more help/reject my help til I can properly assist you.
Thanks,
Lee

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Related Questions:

0helpful
1answer

I'm trying to locate the instruction manual for sony spp - a972

http://esupport.sony.com/US/perl/model-documents.pl?mdl=SPPA972&LOC=3
tip

Spp-a973

this phone is old and over rated if your pone has a short battery life (even with a new battery) you must buy a new phone that has happened to all 3 of my phones that i have had.





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0helpful
1answer

My Sony cordless handset doesn't work and displays "S/C Invalid".

  1. Place the handset in the base.
  2. Unplug the AC power adapter from the telephone base.
  3. Disconnect all the telephone lines from the telephone base.
  4. Allow the telephone base to remain without power for 1 minute.
  5. Connect all the telephone lines to the telephone base.
  6. Plug the AC power adapter back into the telephone base.
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Problem with hearing

Try moving around while you are on call or moving close to the base.Make sure your battery is fully charged.And also try adjusting the volume of the earpiece
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Where do I buy a new battery?

hi,

Locate the nearest Sony center around you or get a certified sony personnel closest to you. You can go to the sony website to get this information.

Hope this helped.

Regards
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S/C invalid on my cordless phone screen (Sony SPP-A972

Most likely water has gotten into the back of the handset and shorted the handset.

AL
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Cordless phone doesn't work

Make sure it is fully charged and then try again.
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