Unlock code for SEA222 SSB Radio

Discussion in 'OnBoard Electronics & Controls' started by stuartyh, Aug 23, 2008.

  1. stuartyh
    Joined: Aug 2008
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    Location: Trnindad and Tobago

    stuartyh Junior Member

    Hi guys My name is Jeff and I have a real problem.
    I have this SEA 222 SSB when ever it is switched on and the usual test routine is finished it just goes into unlock and you cant enter anything or transmit.
    Does anyone know the unlock code for this Radio or what is the method for unlocking it.
    Any help will be appreciated.
    Thaning u in advance.
    Regards Jeff
     
  2. lazeyjack

    lazeyjack Guest

  3. stuartyh
    Joined: Aug 2008
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    stuartyh Junior Member

    Thank you for ur info

    Ok Lazeyjack
    thank u for the info but when I try to access their email site I cant seem to be getting through.

    I am going to try again in a while and see what takes place.
    So bye for now
    Regards Jeff
     
  4. Meanz Beanz
    Joined: Jun 2007
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    Meanz Beanz Boom Doom Gloom Boom

    Hmmmm my guess is that it will be unique and with the documents you got when you bought the radio.
     
  5. MikeJohns
    Joined: Aug 2004
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    Location: Australia

    MikeJohns Senior Member

    If you get really stuck I have the same radio in my yacht. I could copy the 2 eprom contents and email you the files if you can find an electronics hobbyist with an eprom burner ( try the HAM radio network contacts ).

    Alternatively I could get them burnt here and post the chips, but my experience of mail in the Caribbean is that it can be unreliable for 'interesting' packages.

    The eproms are socketed and easily changed.
     
  6. the1much
    Joined: Jul 2007
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    Location: maine

    the1much hippie dreams

    if we can get it to work man,,, we can sell it,,,hehehehe :D
    can ya believe someone just left this out here laying on the ground,,,heheehe ;)
     
  7. fairbank56
    Joined: Dec 2008
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    Location: Maryland

    fairbank56 Junior Member

    It's not asking for an unlock code. It means the PLL (phase locked loop) circuit is unlocked. The radio needs servicing.

    Eric
     
  8. MikeJohns
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    Location: Australia

    MikeJohns Senior Member

    Thanks fairbanks, yes Jeff already worked that out .

    Are you with SEA or a radio tech ?
     
  9. fairbank56
    Joined: Dec 2008
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    Location: Maryland

    fairbank56 Junior Member

    I'm a marine electronics tech with a lot of experience with the 222. Repaired two of them today as a matter of fact. Good old radio's. Just found this forum while surfing around.

    Eric
     
  10. MikeJohns
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    Location: Australia

    MikeJohns Senior Member

    Do you know how to change the allowed frequencies ? I see them in the Eprom listing but the Australian model had some of them blocked but these channels are allowed overseas which is a pain. They should be convertable to the HAM bands as well.
     
  11. fairbank56
    Joined: Dec 2008
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    Location: Maryland

    fairbank56 Junior Member

    Are you saying you can't program any freq you want into the scratchpad memory? I haven't seen one that was not completely "open". But it seems to me that I have some documentation somewhere at work about opening up the 222. I'll look into it this week.

    Eric
     
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  12. MikeJohns
    Joined: Aug 2004
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    MikeJohns Senior Member

    Thanks for your reply

    Scratchpad disabled in our models. I presume thats a bit of code in the EPROM.

    If you have a hex or bin file of a US model eprom I'd like to give it a try.

    cheers

    Mike
     
  13. MikeJohns
    Joined: Aug 2004
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    MikeJohns Senior Member

    File received
    Thank you very much.
     
  14. sidk
    Joined: Feb 2009
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    Location: cap cod MA

    sidk Junior Member

    Key Pad etc

    My Sea 222 keypad is bad. Flex cable melted. I connected a new key pad with correct wiring. Only some keys work..It appears the uprocessor has been damaged. I am not suprised with melted flex cable. I am suprised there was that much current availble. I can only locate the MC 146805E2P in quantities of hundreds. Can you tell me where I could buy one? I used to do radio repair but have been out of the business for years! Sid
     

  15. fairbank56
    Joined: Dec 2008
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    fairbank56 Junior Member

    Sounds like a moisture problem. Have you inspected the bottom of the circuit board in the area of J-3 and R169 thru 176? Checked for continuity/shorts of the pcb circuit traces from resistors to processor? Those resistors should have protected the microprocessor in the event of a short in the keypad ribbon connector. The keypad is a simple 4x4 matrix so you could rule out a bad keypad by just shorting the pins on the pcb...i.e. pin 4 to 5 is number 1, 4 to 6 is number 4...etc. I have no source for the processor but if the boat has a 1612 tuner, it has the same processor so you could swap it to verify that it is indeed the processor.

    Eric
     
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