I have an AF35ML and was annoyed by the loud beep when shooting in low light.
So, I opened the top, cut off the flashes cables, isolated the cables and put the top back. When activating the flash, the camera seems to use always the same exposure time and change the aperture according to the ASA-number. So in low light I turn on the flash and set the ASA-dial to 25 to use the largest aperture. Thats not an elegant solution, but I hope to get examples soon.