The ceramic board which is "printed" with the manual shutter speed resistors
is part of the main circuit. Cleaning can relieve some of the problems.
John
http://www.zuiko.com
William Sommerwerck wrote:
> "After 20-odd years of service, my OM-2n has started acting oddly. I've
> noticed that, in manual mode, the slow shutter speeds don't always
> work properly."
>
> This is almost certainly due to a deteriorating switch. As you turn the
> switch, you select different resistors for the timing circuit. If the
> switch is making bad contact, the switch resistance will add to the
> total resistance and slow down the shutter.
>
> The faster speeds work because, presumably, you use the faster speeds
> more often and the contacts are cleaner. (This is not uncommon. I've
> seen switches deteriortate in equipment that didn't get enough use.)
>
> Cleaning the contacts would probably fix this. Be sure the repariman
> puts some sort of contact enhancer (such as Cramolin) on the switch
> after he cleans it. A complete switch replacement would be better, but I
> hate to think what it would cost.
>
> < This message was delivered via the Olympus Mailing List >
> < For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
> < Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|