Pentax ZX-5n Exposure Compensation Dial Replacement

Push down on the screw to depress the spring loaded hinge and release the door.

Remove six 5.3 mm #00 screws.

Remove one 3.4 mm #00 screw.

Remove three 5.3 mm #00 screws (the bottom-most screw is not always present).

Remove one 7.3 mm #00 screw.

Remove the remote trigger cover.

Remove one 3.4 mm #00 screw.

Remove two 5.3 mm #00 screw.

Remove two 3.9 mm #00 screws.

Slide the eye cup up and off to access the screws underneath.

Remove two 5.3 mm #00 screws by the eyepiece.

Remove one 6.8 mm #00 screw in the battery compartment.

Remove one 7.0 mm #00 screw near the take up spool.

Lift the cover so it is just free of the body. It is still attached by several wires.

Use a 1kΩ-10kΩ resistor to discharge the capacitor. Place the resistor between the blue wire, exposed in the previous step, and ground.

Unsolder one green wire.

Unsolder one blue wire.

Unsolder one brown wire.

Unsolder one black wire.

Unsolder one black wire.

Pull black wire out from its routed location.

Unsolder flex connector

Set the exposure compensation dial to '0'.

Remove two #00 screws

Be careful not to damage the feeler contacts from the drive mode switch throughout the repair. There are delicate and easily bent.

Remove the contact PCB.

There is a metal plate underneath that may stick to the PCB.

Slide the exposure compensation dial out of the top cover.

Remove the ball bearing from the inside of the dial.

Remove the detent spring from the top cover.

Remove the small plastic c-clip on the end of the shaft.

Remove the lock button.

Remove the lock actuator.

Remove the lock spring.

Use tape to hold components in place when reassembling the lock button and installing the dial.