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Chaffinch
Tinkerer
Username: Chaffinch
Post Number: 3
Registered: 10-2008
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, December 07, 2008 - 05:31 pm: | 
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I've just acquired a very tidy example of this rather nice rangefinder, but have a problem with the metering. At first it appeared to be dead, but I discovered that, with a gentle shaking, the needle would spring to life and flicker it's way to about half-way down the EV scale before retreating to the rest position at the top. It will also show signs of life with pressure on the shutter release; there appears to be a meter-locking system which the shutter release activates just prior to exposure.
Before I remove the bottom plate to check the state of the contacts to the battery compartment, can anyone make any other suggestions as to the possible cause of this behaviour? |
Harryrag
Tinkerer
Username: Harryrag
Post Number: 22
Registered: 05-2008
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, December 08, 2008 - 08:49 am: |
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There is definitely no meter-locking system, but the usual meter needle trap mechanism in the auto mode.
After inspecting the wiring, especially around and close to the battery box, faulty meters may result from
- broken or disconnected retracing springs (soldering them back is a VERY delicate task!)
- a broken meter coil
- intermitting contacts at the two variable resistors on the back of the meter housing
- a defective LDR (aka CdS cell, "electric eye")
That sort of malfunction is often not easy to locate/repair, have just experienced that. |
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