Electronics
44 posts tagged Electronics. Search within these →
Mamiya 7 65mm Lens: Shutter Not Latching, Release Magnet Cleaning
This Mamiya 7 65mm lens arrived with the symptom of a non-latching shutter. Whenever the wind lever on the camera was wound, the shutter would release on…
Mamiya 645 Super/Pro: Battery Contacts Bent by New Battery Style
Another post about new style form factors on batteries causing problems for Mamiya cameras, this time the 645 Super/Pro/ProTL. I have done several on the…
RZ67: Failing Electrolytic Capacitors
If you are purchasing an RZ67, keep in mind that unless it has been serviced in the last decade (most have not) it will need repairs of some sort maybe…
RZ67: Broken Dark Slide Safety Switch Allows Release
If your RZ67 will allow shutter release with the dark slide in place, the issue is a broken dark slide safety switch. I have done two of these switch…
Mamiya 6: Dead Meter and Shutter from Soldered Main Switch
This Mamiya 6 arrived with the meter and shutter inoperative. On removing the top cover I could see that the main switch flexible contact arm was a bit…
Mamiya 7II: No Flash Sync from Broken Shoe Safety Switch Pin
This Mamiya 7II arrived with a complaint of no flash sync. Looking under the flash shoe after removing the flash shoe spring, I could see that the safety…
Mamiya 7: No Power from Crusted Battery Contact
This Mamiya 7 arrived here with the complaint of no shutter release and no display. Basically no power. When put on the test equipment and the shutter…
Mamiya 7: Wind Locked by Fallen Self Timer LED Cover
Some repairs require a lot of troubleshooting/disassembly to properly diagnose what the issue could be and the repair itself may be trivial. Other problems…
Mamiya 7II: Energizer A544 Battery Warning, Part 2
I did a post on this issue a little while back but feel that I need to do this again and in more detail as it is causing issues for Mamiya 7II owners…
Mamiya 7II: Loose Cable Release Socket Repair
If you have a Mamiya 7II and use a cable release this might be a handy post to read in order to keep it running for a long time. This Mamiya 7II came into…
Mamiya 7II: No Power Caused by Energizer A544 Battery
This post is for users of Mamiya 7II cameras. The Mamiya 7II that was on my bench today had an issue that had me a bit perplexed. Complaint was that there…
Mamiya 7 65mm Lens: Replacing the Broken Flex Cable
Since I am servicing a Mamiya 7 65mm lens I thought that I would do my yearly post on replacing the flex cable. Common complaint with this lens is that the…
Mamiya 6: No Power from Corroded Battery Contact
This Mamiya 6 came into the shop with no display or release. Obvious power supply prolem and when I removed the battery cover and batteries, I could see…
Mamiya 6: Wrong Shutter Speeds from Spring Lodged in Speed Selector
This Mamiya 6 arrived with a common issue, a broken viewfinder window. But, it also had a problem that I have never seen before, which was various shutter…
Mamiya 6: Power Switch Not Turning Off After a Previous Repair
This Mamiya 6 had the complaint of the power switch not turning off. Not a common issue so the top cover needed to be removed to investigate The problem…
Mamiya 7II: Unstable Meter Display from a Loose ISO Dial
This Mamiya 7II arrived with the complaint that the meter display was not stable and would change from the correct setting to the overexposure arrow. Sure…
Mamiya 7 65mm Lens: Flex Cable, Cold Shutter Delay, Focus Issues
This Mamiya 7 65mm lens came into the shop with a few issues: Broken flex cable (very common) Delayed shutter release Focus issues The broken flex cable is…
RZ67: Diagnosing Shutter Not Releasing, Mechanical or Electrical
A very common issue with the Mamiya RZ67 is that the shutter does not release. This is usually caused by the mirror not releasing and can be a mechanical…
Mamiya 7II: B Setting Failure and Battery Drain
This Mamiya 7II arrived with two issues: 1.) B shutter setting did not work and 2.) Battery drain. Turns out they were related problems. The camera, owned…
Mamiya 645 AF Series: Repair Fixtures and Why to Avoid Buying
This post is about a Mamiya camera that I generally don’t recommend purchasing these days: the Mamiya 645 AF series. Great camera when it works but it has…
Mamiya 7II: Broken Plastic Battery Cover Caps
I have had two Mamiya 7II models come into the shop this week with broken plastic battery covers so it looks like time to revisit this topic. Although the…
Mamiya 7 65mm Lens: Shutter Magnet Not Holding
The Mamiya 6/7 lenses are fairly robust but lately I have been seeing a lot of them for service. Maybe age is catching up with them. This 65mm lens came…
Mamiya 645 Super: Shutter Removal and a Damaged Curtain
A little technical info on the Mamiya 645 Super. Photo one shows how the shutter unit is removed from the back of the body. This particular shutter had…
Mamiya 7 65mm Lens: Testing for a Broken Flex Cable
This post is another one about the Mamiya 7 65mm lens. I see a lot of these lenses in the shop with the issue of a broken flex cable. If you are purchasing…