Originally posted by Bob Bimon [I think I had a problem when posting my previous reply (2 months after ther first one), that's why I post it again, in relationship with the testbench that helped me to validate the shutter mechanism, and the whole camera after final rebuilding.]
Hi Alan.
I DID IT !
Unbelievable, but after changing the motor, I remounted the whole camera without an error, thanks to your guidance.
It works, I'm still amazed to have done it at the first shot...
The shutter + mirror mechanisms resynchronized themselves when putting batteries inside.
Before loading a new film, I tested the shutter speeds on my 3$ testbench, as shown on attached pictures (2 lasers from toyguns + phototransistors + 1 battery + 1 switch + 1 microphone wire + jack + PC + Audacity).
Seems to be good.
Of course the last test will be done with the results with the film, I cross fingers.
Alan, let me say you that I appreciated a lot the help you gave me, and to be so patient with me.
I learnt a lot about photograph engineering (especially on shutter), and to be calm too, thanks to you.
Bob
PD : I needed to retest shutter speed because I made a mess dismantling accidentally the shutter mechanism box - a nightmare and a genious mechanism at the same time - ; thanks to Alan and of some litterature on internet I finally understood how shutter works, and built a cheap tesbench to calibrate curtains springs for the expected speeds.
If anybody needs help on it, he's welcome to ask me help on that topic.
Hi Bob!
I am new to this forum and I already read your "MEZ50 repair procedure issue3". It is very similar to the MZ5n I am working on. On page seven you gave the hint to not losen the two screws of the shutter mechanism. Unfortunately I did it before I found your advice. I would absolutely apreciate any tip to that topic.
The situation is as follows. The gear is already changed. If I put external power to the motor mirror and shutter do work seemingly properly.
As I put all parts together and batterys in I immediatly hear the typical shutter and mirror sound for exactly one time. Autofocus does work as expected but the shutter unfortunately does not do anything. No mechanical sound no beeping from a stuck motor or anything.
I would celebrate feedback
Appimatic