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Bronica EC Shutter problem


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On 11/25/2022 at 4:56 PM, retropad said:

Hello everyone. does anyone have a detailed close up picture of every angle possible of the circuit? i'm not very good in electronics and i cant really read those circuit diagram, the best i can do is replicate the circuit based on the picture and of course, the name of the electronic parts used. Thank you very much. I hope someone read and will reply my comment

Hi retropad,

Do you still have the circuit diagram? Thanks!

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On 3/12/2019 at 9:54 AM, richardkieran said:

Me too. My EC has the same issue. I have figured out the basic circuit, but I have questions. I could use clarification of the wiring in the camera. Also, the circuit I came up with has the problem that, although it times the "shutter" (an LED), it only does so if the switch is released BEFORE the end of the time period. Might be difficult with fast shutter speeds. It appears that, with my circuit, the standard monostable circuit for the 555 chip, the shutter will remain open as long as the shutter button is held down. Unless the shutter switch in the camera somehow solves this problem. Can anyone help me?

Has your shutter problem  been fixed?



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