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Dormant EMC-20H

Discussion in 'Cochran Undersea Technology' started by Ghetto Diver, Nov 15, 2019.

  1. Ghetto Diver

    Ghetto Diver Solo Diver

    # of Dives: I just don't log dives
    Location: Beerfield Beach, FL
    624
    300
    63
    I have 2 Commander versions of these.
    AFAIK these aren't the ones with volatile memory. Stored with dead batteries. Installed new, good, batteries and nothing. I have tried removing/reinstalling and temporarily reversing top battery.
    Any help appreciated.

    I have reached out to mfg, but no response as of yet.
     
  2. jvanostrand

    jvanostrand Nassau Grouper

    # of Dives: 1,000 - 2,499
    Location: Waterloo, Ontario, Canada
    80
    62
    18
    The company has effectively closed the business. They remain open to handle warranty work only, no other service. It's a shame. Mike died and I guess that he was too integral for the business to continue.
     
  3. Ghetto Diver

    Ghetto Diver Solo Diver

    # of Dives: I just don't log dives
    Location: Beerfield Beach, FL
    624
    300
    63
    Thx.. was not aware of limited service.
    I might open/sacrifice one of them.
    I have brought back old Uwatecs, maybe I will get lucky.

    ETA: not so lucky. That 'block' is a soldered header pin.
     
  4. davehicks

    davehicks ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: Seattle
    685
    633
    93
    I have two EMC-20H units that I've owned for at least a dozen years. I upgraded to Shearwaters years ago but kept diving the Cochrans as backup. Both computers died this year. The first with a faulty temp sensor warning, the second seems to have a wonky LCD display.

    If anyone is interested in trying to use these for parts, let me know.
     
  5. davehicks

    davehicks ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: Seattle
    685
    633
    93
    Does anyone have info on opening these units? It occurs to me I could try to put LCD from the unit with a bad sensor on the other... Nothing to lose but might be helpful to have some servicing docs or tips.
     
  6. rhwestfall

    rhwestfall Woof! ScubaBoard Sponsor

    # of Dives: 200 - 499
    Location: "La Grande Ile"
    15,927
    18,562
    113
    that (no battery) was what doomed my old one (Commander Air).....
     
  7. Ghetto Diver

    Ghetto Diver Solo Diver

    # of Dives: I just don't log dives
    Location: Beerfield Beach, FL
    624
    300
    63
    Nothing out there that I could find.
    I just opened both. There is an unsoldered block that connects the lcd unit to the other half of electronics. Both of mine have corrosion on contacts and the 'feet' of the block broke off on some. I am sure I can find a replacement on ebay or elsewhere.
    Not giving up yet.
    As I mentioned earlier, I believe this models memory is not volatile so I have some hope.
     
  8. davehicks

    davehicks ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: Seattle
    685
    633
    93
    I'll give it a try today and see if I can salvage one unit.
     
  9. davehicks

    davehicks ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: Seattle
    685
    633
    93
    I just took apart the two units, no problems there. The surface mount connector on the base of one had loose joints and popped off after trying to swap the screens. Probably why the LCD was failing in the first place. The other base has the bad sensors in it, so I am out of options.
     
  10. jaseUK666

    jaseUK666 Nassau Grouper

    # of Dives: 1,000 - 2,499
    Location: UK
    99
    45
    18
    I had one where the battery went flat, after that it flickered the whole time and I didn't trust it though it did look like it was working. Having Cochran fix it was quite expensive at the time, so I bought an OSTC instead
     

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