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[OM] Re: OM2n : what fails first, batteries or test ?

Subject: [OM] Re: OM2n : what fails first, batteries or test ?
From: John Hermanson <omtech1@xxxxxxxxxxx>
Date: Thu, 16 Nov 2006 10:13:19 -0500
The "chrome only" requirement applies to OM-2S, 3, 4, 4T, 4Ti.  There 
was no problem associated with black caps on OM-2/2N.

___________________________________
John Hermanson
Camtech Photo Services, Inc.
21 South Lane, Huntington NY 11743
631-424-2121 | Olympus OM Service since 1977
http://www.zuiko.com  |  omtech1 AT verizon.net


Moose wrote:
> Jeff Keller wrote:
> 
>>People have reported that loose screws on the bottom plate can cause
>>intermittant problems. If it is black, John recommends using silver
>>battery caps. Check out the battery compartment for corrosion or a
>>bent spring. It really sounds like a poor connection somewhere.
>>  
> 
> Yup, could easily be one of those things. OR - it could be the 
> batteries. This behavior is common when using alkaline batteries. Unlike 
> the best silver oxides, they start to drop in voltage fairly early after 
> starting use. Then they also drop in voltage under load much more than 
> proper silver oxide batteries. The 2 and later bodies intentionally are 
> designed to lock up if the voltage drops too low to assure correct 
> exposure. If it locks up, you KNOW the shot wasn't caught, rather than 
> getting a nasty surprise later. So under the trivial load of the test 
> circuit, the red light is fine, but under the much higher load of the 
> shutter curtain electro-magnets, the voltage drops and the camera locks 
> up until released.
> 
> So, they will often tend to work fine for the occasional short exposure 
> shot, but lock up with longer exposures or the second or third exposure 
> in rapid succession.
> 
> Moose
> 


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