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Charles Fallis
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, May 10, 2006 - 03:00 pm: | 
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What would cause a Yashica Lynx 5000 to consistently underexpose by two f/stops? |
Haig Hovaness
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, May 10, 2006 - 03:13 pm: |
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I believe the Lynx 5000 meter was designed to use the 1.35 V mercury battery. If you are using a 1.5 V alkaline battery, that could be causing the problem. I suggest using a zinc-air 675 type hearing aid cell (1.4 V) with an o-ring spacer and seeing if that improves the metering accuracy. If not, you may have a bad CDS cell or a calibration problem. |
Alex
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, May 18, 2006 - 03:31 pm: |
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http://daniel.mitchell.name/cameras/lynx5000/lynx5000.html
This article may be of interest. It notes that the Lynx metering system uses a carbon strip to vary current through the meter, and if this wears out, metering can be off by up to two stops. This may well be the source of your problem. |
WernerJB
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, May 19, 2006 - 09:11 am: |
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This resistor strip is glued to a ring that can be turned, so if it has come loose the metering is no longer correct. But there are still other electronic failures possible: the battery case, the wiring, its soldering joints, the CdS cell, the switch etc. By using an ohmmeter you should be able to check all the components. The last thing to consider is the meter coil itself. Inspecting all this takes an awful lot of time, but it is not too difficult on a Lynx, W. |
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