FROM: "Blueyes" SUBJECT: Mamiya RB67 ProS DATE: Sat, 9 Sep 2000 20:05:11 -0000 ORGANIZATION: CenturyTel.net NEWSGROUPS: rec.photo.equipment.medium-format I purchased a used Mamiya RB67 ProS with a waist level finder, 127mm lens and a RB67 ProS 120 film back. The camera doesn't have a scratch on it. The problem is, however, that the film advance disconnect isn't working. After a picture is taken, the winder should be able to advance the film and the shutter should be inoperable to prevent double exposure. I have to manually activate the winder disconnect to wind to the next exposure. Does anyone have any idea what the problem might be? Any advise would be greatly appreciated. I am new to the medium formats. Thanks ----------------- FROM: w.j.markerink@a1.nl (Willem-Jan Markerink) SUBJECT: Re: Mamiya RB67 ProS DATE: Mon, 11 Sep 00 17:50:22 GMT ORGANIZATION: A1 de Internet Provider uit Twente B.V. NEWSGROUPS: rec.photo.equipment.medium-format In article , "Blueyes" wrote: >I purchased a used Mamiya RB67 ProS with a waist level finder, 127mm lens >and a RB67 ProS >120 film back. The camera doesn't have a scratch on it. The problem is, >however, that the film advance disconnect isn't working. After a picture is >taken, the winder should be able to advance the film and the shutter should >be inoperable to prevent double exposure. I have to manually activate the >winder disconnect to wind to the next exposure. Does anyone have any idea >what the problem might be? Any advise would be greatly appreciated. I am new >to the medium formats. >Thanks ----------------- > There are two body<->back connections with the Pro-S, the one on the right prevents exposure without previous transport (double exposure), the one on the left prevents transport without previous exposure&shutter-cocking (blanks). This left-side connection was malfunctioning on my Pro-S too when I got it (quite used I might add).... For surgery, you must remove the circular texture on top/inside the transport-lever, then the big slotted screw inside, plus 4 small phillips screws, two on top, at the front edges, and two inside, upside-down, also on the outside....now the top cover can be taken off, and you can peep inside. Now, with the patient opened up, you need a good imagination of what happens inside when the pin protrudes from the camera into the back, and restore proper operation by bending one or more parts back in shape (not sure how these can get bend out of shape in the first place....anyone?). If you have two left hands, better forget this....;)) (posted & mailed) -- Bye, Willem-Jan Markerink The desire to understand is sometimes far less intelligent than the inability to understand [note: 'a-one' & 'en-el'!] FROM: "Wayne D" SUBJECT: Re: Mamiya RB67 ProS DATE: Sat, 9 Sep 2000 23:22:06 -0400 ORGANIZATION: Posted via Supernews, http://www.supernews.com NEWSGROUPS: rec.photo.equipment.medium-format "Blueyes" wrote in message news:WfAu5.2483$gq.34996@read1.centurytel.net... > I purchased a used Mamiya RB67 ProS with a waist level finder, 127mm lens > and a RB67 ProS > 120 film back. The camera doesn't have a scratch on it. The problem is, > however, that the film advance disconnect isn't working. After a picture is > taken, the winder should be able to advance the film and the shutter should > be inoperable to prevent double exposure. I have to manually activate the > winder disconnect to wind to the next exposure. Does anyone have any idea > what the problem might be? Any advise would be greatly appreciated. I am new > to the medium formats. > Thanks ----------------- > When you trigger an exposure there is a pin that extends from the body into the magazine on the left side (as you hold the camera in your hands with the lens facing away). This pin hits a lever that unlocks the mechanism allowing the film to be wound to the next exposure. I had a back in which this lever had become loose, and I had to reset it for each exposure as you are describing. FROM: pleohmy@aol.com (PlEOHMY) SUBJECT: Re: Mamiya RB67 ProS DATE: 10 Sep 2000 03:48:39 GMT ORGANIZATION: AOL http://www.aol.com NEWSGROUPS: rec.photo.equipment.medium-format check your back and make sure it is a Pro S, if it is the Pro and not the S, that is the way it operates, I had one, you take the photo, move the lever in the upper middle of the back, then advance the film to the next frame. Maybe this will help Lauvone FROM: "Wayne D" SUBJECT: Re: Mamiya RB67 ProS DATE: Mon, 11 Sep 2000 13:54:44 -0400 ORGANIZATION: Posted via Supernews, http://www.supernews.com NEWSGROUPS: rec.photo.equipment.medium-format "Blueyes" wrote in message news:WfAu5.2483$gq.34996@read1.centurytel.net... > I purchased a used Mamiya RB67 ProS with a waist level finder, 127mm lens > and a RB67 ProS > 120 film back. The camera doesn't have a scratch on it. The problem is, > however, that the film advance disconnect isn't working. After a picture is > taken, the winder should be able to advance the film and the shutter should > be inoperable to prevent double exposure. I have to manually activate the > winder disconnect to wind to the next exposure. Does anyone have any idea > what the problem might be? Any advise would be greatly appreciated. I am new > to the medium formats. > Thanks ----------------- It's been a long time since I had an RB in my hands, so let me elaborate a little. When you push the shutter button and the shutter fires, a pin (I BELIEVE it's on the upper left corner of the camera as it faces away from you - not 100% sure, it may be the one on the right side - then again both pins probably perform the same function when the back is in horizontal/vertical positions) extends into the magazine and opens the film advance mechanism's lock. I can't imagine that the pins aren't extending, I would suspect a faulty back first. I had a Pro S system and I believe that earlier bodies did not have this feature. It's easy to see if the back is at fault. Remove the back and see if you can trip the lock manually. The hole is big enough to get the tip of a straightened paper clip into in order to hit the lever. Very little force is required, just a gentle push will do. In my faulty back the lever had become loose or detached from it's pivot and wouldn't open the lock.