Minolta Hi Matic 7sII aperture blades problem

[mastaliu]

I have a Minolta Hi-Matic 7sII and the last 3 f-stop clicks 4, 2.8, 1.7 don't move the aperture blades so I can't open it beyond f5.6.

Any ideas - any thing I can do on my own or any recommendations on who can fix it?

I really like this little camera and so any help would be appreciated.

thanks.

 

[btgc]

mastaliu, that blades are dirty. After taking my Lynx outdoors, once I got issue that aperture stuck not opening wider than, maybe f2.8. I did a "lazy cleaning" not disassembling shutter, for now it works.

 

[ully]

mastaliu, that blades are dirty. After taking my Lynx outdoors, once I got issue that aperture stuck not opening wider than, maybe f2.8. I did a "lazy cleaning" not disassembling shutter, for now it works.

What is lazy cleaning?

 

[btgc]

Richard, by lazy method I mean removing front element and cleaning whatever accessible with naphta.
I wrote some notes on this http://www.rangefinderforum.com/forums/showthread.php?t=56023 maybe this is useful.

 

[ully]

Thanks btgc, I have a Minolta Hymatic 7 with stuck blades. I took the front elements off and soaked them with lighter fluid and swabbed with cotton buds. Had to do this several times before the aperture and diaphram blades became unstuck.

Now still working after several weeks.

 

[btgc]

Hope it does so further, ully.