Originally posted by WW2JAKE But there is one thing I cant figure out. I've used multiple flashes and on some the flash would fire when you released the shutter and when you advanced the film. Then some (including all corded flashes) would flash every time it got charged enough and just keep flashing even if you didn't touch the camera. I can't see any issues internally. Any idea what I should be looking for?
Flash sync on your camera is done with a set of contacts on the shutter curtains. One of those is apparently sticking in the closed state.
You can download the K1000 service manual for free from:
Pentax Service Manuals at Pentax-Manuals.com
A detailed description of how the sync works and how to troubleshoot the contacts is found in the second section of the K1000 service manual.
Good luck.
Steve