Pentax ZX-5n Flash Capacitor Unit

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

De-solder the indicated joints. Use a solder sucker on the tabbed connections.

Pull the black wire from the battery flex to get more slack in the connection to the top cover.

Use a solder sucker to de-solder the four posts from the flex circuit.

Unsolder film advance motor connections.

Unsolder sprocket counter connections.

Unsolder power and ground connections.

Unsolder panorama switch connections.

Remove one 4.3 mm #00 screw.

Gently pry up the plastic carrier under the flex circuit. It may catch slightly on the battery contact tab.

This metal tab is lightly held in place with lacquer and can easily come loose. Keep an eye on it.

Remove one 3.3mm #00 screw.

Remove one 3.9 #00 screw.

De-solder the red wire.

Peel off the black tape. Leave it attached to the wires.

Gently peel the flex circuit from the surface of the capacitor.

There may be additional adhesive underneath the larger capacitor.

Lift the two capacitors and the flash PCB out as a single unit.