Chip is frosting up no matter what I do

Discussion in 'Legacy Models (ST, STL, etc.)' started by CrossoverManiac, Oct 1, 2020.

  1. CrossoverManiac

    CrossoverManiac Standard User

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    My ST8XE CCD sensor chip keeps frosting up even after changing out the reusable desiccant packs twice and changing out the desiccant plugs after they were recharged by letting them bake in my oven for four hours at the recommended temperature. What would cause the camera cooling system to malfunction like that?
     
  2. Doug

    Doug Staff Member

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    Check the O-ring on the desiccant plug. You're supposed to remove it from the plug before baking, and put it back on afterwards. If you didn't remove it, it might be damaged and not sealing properly.
     
  3. Colin Haig

    Colin Haig Staff Member

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  4. CrossoverManiac

    CrossoverManiac Standard User

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    I have that one and it didn't either. Also, that one did have an O-ring.

    Also, it was working fine before. I had the temperature down to -10°C before and had no problems. I originally thought it needed a new desiccant pack and I changed it out twice.
     
  5. CrossoverManiac

    CrossoverManiac Standard User

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    I didn't see an O-ring on the original desiccant plug. I'll see about buying a replacement.
     
  6. Doug

    Doug Staff Member

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    It's $9.34 for 100 O-rings from McMaster Carr.

    https://www.mcmaster.com/9557K465/

    Massive overkill in terms of having extra O-rings, but perhaps the least expensive option.
     
  7. CrossoverManiac

    CrossoverManiac Standard User

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    It helped. Thanks for the advice.
     
  8. JoeGafford

    JoeGafford Cyanogen Customer

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  9. Doug

    Doug Staff Member

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    Good point, Joe. If the chamber is very wet it might take a couple of recharges to clear out the water.
     

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