I am trying to fix a Minolta SRT 201 with the advance lever stuck at a partially cocked position and the self timer stuck part way back to it's uncocked position.
 
The shutter button won't depress. The film advance release button was stuck down

 Make sure the shutter is cocked and then fully cock the selftimer--that should release things--there is an interlock in bottom, at trip rod area.

 I hope you all get to the bottom of this.
 
I have the same problem with an SRT 101.  In my case the shutter release button is in the down position.  The cocker is near the ASA dial.  THe cocker has a little play but won't budge beyond that, eve

I have had same problem with my 101's.  I first depressed the button on bottom of camera next to battery then I advanced the film with lever, then pushed the self timer down, and then pressed the small silver (ball) button right above the self timer