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Anonymous
Anonymous Posted on Aug 31, 2010
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My Sony cordless handset doesn't work and displays "S/C Invalid".

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  • Anonymous Sep 01, 2010

    I tried the MNfisherman "recipe" twice but it did not solve the problem. The handset still displays "S/C Invalid" and also, it "sqeaks" with a shrill noise when I lift it from the base. Please do NOT send me further input if there is an additional charge. Also you did NOT reply to my complaint that you offered me advice for a discounted $5 BUT charged my VISA for $10. Any answer for that?
    It is understood that I contacted you ONLY for a single-problem answer and NOT for a "subscription." Therefore you may not in any way access my credit card in the future without my express permission.
    Walter Reed 9/1/2010

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Anonymous

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  • Master 11,896 Answers
  • Posted on Aug 31, 2010
Anonymous
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  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.

  • Anonymous Sep 01, 2010

    I do not have any control over the charging. Fixya themselves are in charge of that. If you need to contact their billing department, you may scroll down to the bottom of the page and click the "contact" link.

    I do believe you have faulty electronical components in your phone. That is likely due to bad capacitors as I stated before which will need to be tested with a meter.

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