The advance of the 2S, 3, 4 are different from the OM-1 through 2N. It will
feel rougher and maybe harder to wind. It will not get smoother with age
the way an OM-1 can.
You'd have to test battery drain with a micro ammeter. Procedure for this
is in the archives somewhere. A "typical" old OM-4 can have standby drain
as high as 35 micro amps. (Standby is the drain that's still present after
the meter has gone through a complete "on" cycle).
A good OM-4 would be below 10 micro amps. 4T / 4Ti are between 5 and 10
micro amps.
If you turn the battery test on and it shuts off automatically in approx. 30
seconds, then you already have the newer low drain circuit.
John Hermanson
___________________________________
http://www.zuiko.com
Camtech, Olympus Service since 1977.
21 South Lane, Huntington NY 11743-4714
Phone/fax 631-424-2121
Free Olympus Manuals: 1-800-221-3000
___________________________________
----- Original Message -----
From: "Arild Eikenaes Vengen" <Arild.Vengen@xxxxxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Thursday, October 04, 2001 11:35 AM
Subject: Re: [OM] Precautions when buying used OM-4
| Thanks both of you. I forgot to say that after I read the faq I tested all
| these things, and the camera seems to work fine, but I wondered if there
| are symptoms that can tell if my OM-4 are in the "high-risk group". I take
| it that one can never be sure.
|
| In regard to the battery-drain issue, I misread the faq. I thought that
| the newer circuit were just available in the OM-4T(i) and not the plain
| OM-4. But now I have tested the batterycheck-beeper, and it stopped after
| about 30 sec.
|
| There are no visible dings or dents, just a little "strap-mark" on both
| sides. But the advance-lever behave a little bit different from the OM-1,
| it just don`t feel as mechanical solid as the OM-1-lever.
|
| I will check more on the MD-cover underneath the OM-4, because I were able
| to take the OM-1-cover and use it on the OM-4. Maybe I didn`t make myself
| clear enough in regard to what I meant?
|
| Regards,
| Arild E. Vengen
|
| On Thu, 4 Oct 2001, Henrik Dahl wrote:
|
|
< 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 >
|