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Message |
    
Barnum
Tinkerer
Username: Barnum
Post Number: 170
Registered: 10-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, June 03, 2010 - 12:03 pm: | 
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I have one of these 4-lens 3D cameras. Working when I acquired it. I quite recently read that without usage, the cell can go dead & the camera not function. I did some digging, & found a site that said if a bright light is shone into the cell, it will wake up. Tried that-no go. Anyone have the same problem and fixed it? If so, how did you do it you genius you? |
Barnum
Tinkerer
Username: Barnum
Post Number: 171
Registered: 10-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 09, 2010 - 11:56 am: |
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Regarding my enquiry relating to my Nimslo 3D, I am still hoping some genius is out there, SOMEWHERE! |
Mareklew
Tinkerer
Username: Mareklew
Post Number: 96
Registered: 03-2010
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 09, 2010 - 12:37 pm: |
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Well, this seems to be some rather unusual camera. From the electronic point of view: if it's dead, it's dead, you need to replace parts. Since it's proprietary design, you are mostly on your own regarding spares - so best bet would be to trace back the schematic using pencil and paper and then figure out how it worked...
Marek |
Rick_oleson
Tinkerer
Username: Rick_oleson
Post Number: 1093
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 09, 2010 - 07:00 pm: |
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I have 2 of them, both unused - original batteries still in their little blister cards. maybe i should try one out, you can't get much more "without usage" than that.... |
Tom_cheshire
Tinkerer
Username: Tom_cheshire
Post Number: 324
Registered: 04-2009
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 09, 2010 - 08:19 pm: |
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Read a big rant on photo.net forum some weeks ago about how selenium meters don't quit, only the contact points get oxidized and cleaning them will revive most any meter. He went on and on about how repair people let camera users think what they want to about meters quitting but it wasn't true, etc.
Can't find the exact forum page but his website is here:
http://elekm.net/zeiss-ikon/repair/meter-repair/ |
Mareklew
Tinkerer
Username: Mareklew
Post Number: 97
Registered: 03-2010
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, June 10, 2010 - 02:41 am: |
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Tom, them saying that selenium cells don't quit, just the contacts oxidize, sound like a car dealer selling a 'good car, just all the rubber hoses are shot' or saying, that 'this gear is mostly OK, it's just the teeth that are stripped'.
It's always some part of an element that dies first and is responsible for failure.
As selenium cell based meters need only tiny amount of current, it is often enough to moisturize, or even just press down ('massage') shot conductive paint to regain enough contact - for a time (not long anyway). In many cases it could be possible to revive a cell by putting new contact paint - but what to do if there's still coating on the cell and the conductive layer deteriorated UNDER the coating? With enough effort and money you can even fix a transistor within an IC, but it's not okay to blame repairmen who refuse to do it...
Marek |
Ron_g
Tinkerer
Username: Ron_g
Post Number: 29
Registered: 07-2009
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, June 10, 2010 - 02:42 am: |
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I have found that the selenium cell is seldom at fault when diagnosing and repairing the meters that use them.Poor electrical connections ranks near the top in causes of poor performance.Ron G |
Barnum
Tinkerer
Username: Barnum
Post Number: 172
Registered: 10-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, June 10, 2010 - 09:26 am: |
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Thanks guys, although I'm not sure how selenium meters got in here. I look forward to your findings Rick. |
Foto_gaga
Tinkerer
Username: Foto_gaga
Post Number: 16
Registered: 02-2010
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, June 10, 2010 - 12:47 pm: |
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You are right. The Nimslo meter is a CDS. Well, just pop it open and replace the cell. Or resolder the wires (if that is what happened). |
