Hello, Symptoms: -The mirror is locked in the up position. -Shutter button depresses but doesn't fire the shutter. -Advance lever locked, although I still can turn the meter on and off. Additional Info: -If I turn the self timer lever it automatically returns to its initial position without depressing the shutter button, and eventually without firing the shutter. -If I mount a lens, the lens is fully stopped down at the minimum aperture in the EE/AE position. When and How did this happen?: -I was taking some photographs (please feel free to correct the following prepositions) *in a concert *on the beach *at night (Which are the correct?). The camera was set to ISO 800, the speed @ 1/60 and the aperture @EE mark on my Hexanon 85mm/1.8 (Chrome ring), I recall that the automatic aperture was 1.8 (actually 1.7 displayed). I took the first picture, then I shot the second one but the viewfinder suddenly turned black. What I can't remember is if the shutter was already fired or not. I have searched the net, and I have found this TC dissasembling http://members.tripod.com/rick_oleson/index-49.html I have searched through the entire archives from http://www.kyphoto.com/classics/forum/ And also have found this Konica T4 repairing book http://www.photobooksonline.com/books/manual18.html (I would buy it if they sold an online version) I tried to dissasemble my T4, but a day before I reassembled it because I realized that I didn't know what excatly to do. Any suggestion? What has happened to my camera? Which are the possible causes?(I'm not gonna send my camera to a camera repair specialist, that wouldn't have any sense to me. Because the T4 + Hex 50/1.7 + Flash + Konica Case + neckstrap... costed 38) Thanks and greetings from Spain.