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function but turns on once the sleep button is pre

Discussion in 'Radio and Wireless' started by Sudeep Agrawal, Jul 12, 2020.

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  1. Sudeep Agrawal

    Sudeep Agrawal

    4
    0
    Jul 12, 2020
    I have a vintage sony icf-7600 and it powers up only in sleep mode I.e. the power button does not function. Power comes on once sleep button is pressed and remains on for 30 minutes. Would be very grateful for any suggestions.
     
  2. shrtrnd

    shrtrnd

    3,773
    493
    Jan 15, 2010
    I'd be looking at cleaning or replacing the power-on contacts.
    Do you have any troubleshooting and repair skills, or are you looking for some kind of outside-the-box
    miracle cure?
     
  3. Sudeep Agrawal

    Sudeep Agrawal

    4
    0
    Jul 12, 2020
    Thank you for your reply. I have fairly advanced troubleshooting skills but the issue is that the power button is proprietary and since the model is discontinued, its no longer available. I did try cleaning after removing the entire circuit board but the contacts of the power button are enclosed and not accessible. I also downloaded the service manual of ICF 7600G but could not find leads.
     
  4. Alec_t

    Alec_t

    2,904
    784
    Jul 7, 2015
    Have you tried the power-up technique given in the service manual ?
    PowerSwitch.png
     
    Martaine2005 likes this.
  5. Martaine2005

    Martaine2005

    2,967
    817
    May 12, 2015
    Perhaps you should have made that clear in your first message.
    You asked for suggestions, nothing else.
    @shrtrnd is not a mind reader, he doesn’t know what you have done. Only what information you give in your message.

    You may get help if you post a picture of the switch/button, but as you are advanced in troubleshooting, you could probably find a similar switch/button yourself.
    Sometimes adapting a different type of similar item is the only solution.
    Or visiting swap meets and rummaging through the parts bins.

    Martin
     
  6. Sudeep Agrawal

    Sudeep Agrawal

    4
    0
    Jul 12, 2020
    Thank you Martin for your reply. I have tried shorting the two tracks as given in the manual but the S226 contacts seems to have got oxidized and is no longer contacting. I've been trying to get a replacement switch but not successful. Equivalent replacement is not available locally and authorised Sony center also informed that such a part is not available as the model is discontinued. I shall keep searching till I get a replacement. Thank you for your time and efforts to respond.

    Sudeep
     
  7. Alec_t

    Alec_t

    2,904
    784
    Jul 7, 2015
    S201 may be non-standard but S226 looks like a standard momentary tact switch, as found in various electronic gizmos (so perhaps rescuable from dead equipment)? Those switches come in various sizes, so if you find one with the right dimensions it should do the job.
     
  8. Sudeep Agrawal

    Sudeep Agrawal

    4
    0
    Jul 12, 2020
    I shall re-double and see if I can find one that can sit on the slot provided probably ebay. Thank you once again for responding.
     
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