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Doublecappuccino
Tinkerer
Username: Doublecappuccino
Post Number: 7
Registered: 01-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 23, 2007 - 12:18 am: | 
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I've got a Yashica 124G with an unresponsive meter and was wondering how to properly get to it, first of all, and then how to revive it. I did try a new battery, but no go.
This 124G also seems to lack shutter button "spring". I removed the front panel and noticed that there is a release button inside, but not a separate shaft. Or is the shaft tucked inside the button? In any case, how do I get some spring back into the shutter release? |
Doublecappuccino
Tinkerer
Username: Doublecappuccino
Post Number: 10
Registered: 01-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, March 23, 2007 - 10:35 pm: |
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I suppose I should add here that I also tried getting rid of all oxidation in the battery chamber (there was a minor amount both atop and underneath the battery contact), to no avail.
For now, I'm metering using a handheld meter rather than the unresponsive built-in one and I shot a roll today and it seemed to go fine, although the shutter button still doesn't give any tactile feedback (eg there's only the faintest "click") when depressed.
Stop, Hama time? |
Rick_oleson
Tinkerer
Username: Rick_oleson
Post Number: 212
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 24, 2007 - 08:00 am: |
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The meter is reached from the front by removing the lens panel or from above by removing the hood, or a combination of the two - depending on exactly what you need to reach. access is pretty easy.... |
Ethostech
Tinkerer
Username: Ethostech
Post Number: 64
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, April 01, 2007 - 01:48 am: |
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I suggest you check the continuity of the hot lead from the battery compartment to its soldered terminal at the meter. It should zero ohms. I have two 124G models in my collection and both suffered non-working meters. In both cases the problem was black wire corrosion of the aforementioned wire. That is to say the copper multicores had decayed to non-conductive black powder oxide.
In both cases the black wire corrosion commenced at the battery compartment and extended sufficiently up the wire as to preclude insulation stripping and retinning the good exposed copper cores. A complete new wire is the only answer.
This is quite common with Mercury Cell cameras which are 20 or 30 yearsold - and is the first thing to investigate. |
John_shriver
Tinkerer
Username: John_shriver
Post Number: 6
Registered: 12-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, April 01, 2007 - 01:19 pm: |
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I've also seen it happen spontaneously in wires that didn't even go to the battery. Just PVC wire insulation breaking down, giving off acid that ate the wire inside. |
Doublecappuccino
Tinkerer
Username: Doublecappuccino
Post Number: 11
Registered: 01-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 04, 2007 - 12:21 am: |
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Wow, thank you Ethostecch and John_shriver, that sounds like a possible or even probable culprit. I greatly appreciate the info. |
