I have a new to me F4s that after running a few rolls through and working like a champ now is having issues.
Basically the shutter is not cocking/working right and it gives me a blinking red rewind light. I put new batteries in, no luck. The shutter seems to be half cocked. It also does not seem to fire on "T". If I try it on any other shutter setting it waits about 1/2 a sec then fires (but not at the speed chosen), and gives me the blinking LED.
Any ideas or info would be helpful. I'd like to fix it on my own if it's something simple. If not off to the repair shop it goes.