Originally posted by pentarad Thank you,
current status:
- mirror is operating ( view finder works), except it does not go up when "sensor cleaning" enabled
- shutter stuck, completly closed
- aprerature wheels locked, to move it I have to apply much more force ( feel that some spring is blocking it, it returns to its previous place after removing the pressure)
- solenoid is not moving at all, position of its levar is not affecting the wheels ( it schould be locking when it is down, after applayng the current)
- camara shoots black pictures
- lens is working, focuses, etc. You can see it through the viewfinder
- all the buttons and wheels are working propperly, Ive testedd on debuging tool.
- the flash does not fire, even in forced mode
- mirror is operating ( view finder works), except it does not go up when "sensor cleaning" enabled
Does the mirror goes up in live View mode even the shutter remains closed?
Does the mirror goes up and down when shooting in ordidary manner (using optical view finder)?
- shutter stuck, completly closed
You can check if the shutter is stucked on first curtain or second curtain. Just elevate gently the mirror with your finger and look for metallic dot in upper left corner. It is almost hiding but can be seen. If you see that "dot", the shutter is in normal position (prepared to fire, as always after taking picture), stucked on first curtain. If you see the metallic dot in lower left corner, the shutter is stucked on second curtain (it means the shutter opened first curtain and closed the second, but did not completed whole cycle to be prepared for the next shot). This can be the sign of shutter failure, but not mechanical in origin, most likely electronical. If the previous owner did something wrong on the mother board, shortened the circuitry, the shutter can not operate properly.
- the flash does not fire, even in forced mode
Maybe this can be related to the fact that shutter curtains do not operate properly. This can also indicate capacitor problems. You can check if the capacitor is charging, but I don't know if it's ethical to offer to try it with your fingers, because the discharge is really unpleasant (I've experienced this more than once)
- aperture wheels locked, to move it I have to apply much more force (feel that some spring is blocking it, it returns to its previous place after removing the pressure)
What diaphragm wheels are you talking about? Do you mean the controller of lens' aperture lever that is located on the left side (looking from the mount side)? You can push it up by finger with some force and normally it returns back due to force of the spring inside (it is visible through the slit). That is normal behavior. The normal position of the controller is in the middle. For the controller of aperture lever to stuck mechanically there should be damage of gears inside the mirror movement mechanics. I opened once that "pandora box". OMG!! Luckily I assembled it back correctly.
BTW, if you meant wheels that are partly visible from the side of solenoid ant you tried to spin them applying the force, it is normal to return for them after removing force, because there are some springs inside as well as a claw, similar to an engine crankshaft.
- solenoid is not moving at all, position of its levar is not affecting the wheels ( it schould be locking when it is down, after applayng the current)
You can remove that solenoid by unscrewing 1 screw and move the lever operated by the solenoid core with your finger. BTW, I noted that in Pentax cameras the manufacturer use connecting wires of the same color even in different models. Check if one is lightly rose and another lightly violet (should be for sure). Are those wires soldered in correct way as in picture below?