Nizo s800 power issues?

[Jared Hall]

I’ve had this for a long time and finally want to either fix this or buy another. When I first got it, the shutter would only fire every once and awhile when I clicked the trigger. Now it never does anything beyond click, the lever that normally moves near the center of the picture does move and contact the other metal prong when the trigger is pressed, but nothing happens. The zoom works perfectly fine, I’m not sure if this is something I can fix / that’s worth fixing or if I should just buy another. Shame because it’s in great condition visually

 

EDIT: I just got it to work in all 3 frame rates but it’s intermittent like before. It starts off smooth then starts to get louder and sometimes stops after a few seconds. It sounds like the motor is giving out almost? I’m not sure why this is happening / why it works intermittently. Idk if the power isn’t being supplied properly or if it’s the motors. Any ideas or insight appreciated 

Edited May 8 by Jared Hall

[Jared Hall]

Edit 2:

Something I just noticed is sometimes the 2 contacts get stuck together even after I release the trigger. After pushing it a few times it eventually releases and then the motor moves for just a split second. I also noticed when I press the trigger and the contacts connect, there’s a very small spark noticeable

[Martin Baumgarten]

It's important that all electrical contacts have clean untarnished surfaces: thus switches, relays, dial potentiometers, etc.  The motors rarely fail in these cameras....you'd have to have run tons of film, way beyond 100 cartridges or more.  Figure even at 100 cartridges, the motor for film transport runs for about 333 minutes if filming at 18 frames per second. Less time if using 24 fps, but of course it runs a bit faster.  The motors are sealed pretty good, but depending where the camera was stored idle for a very long time [years] mild corrosion could've built up on the internal commutator and brushes.  This would require removing the drive motor, opening it up and cleaning after checking it out first.  However, I would first eliminate all electrical connections that bring power to the motor......and the two weak areas are the trigger switch contacts and the Frames Per Second Rate Switch. Thus the contact wiper on the resistor surface must be clean and free of tarnish as well as the surface. Some may use a Dialectic Grease for lubrication and tarnish prevention as well.  Another easy way to know how the motor works, would be to run it freely by power it separately......so disconnect power to the motor from the camera, and power the motor directly from an equal power supply. If she runs fine, you'll know for sure the problem lies in the camera body somewhere.  Of course....a motor running freely isn't the same as under load, but close enough to know that's not the problem. You can create some drag on the motor shaft with two fingers while running it to see how powerful it is.  Good luck, be careful in all your work!