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Pentax ZX-5n Flash Capacitor Unit

必要な工具と部品

  1. Pentax ZX-5n Flash Capacitor Unit, Remove back cover: 手順 1、 1の画像 1
    • Push down on the screw to depress the spring loaded hinge and release the door.

  2. Pentax ZX-5n Flash Capacitor Unit, Remove bottom cover: 手順 2、 1の画像 1
    • Remove six 5.3 mm #00 screws.

    • Remove one 3.4 mm #00 screw.

    • The short screw has a machine thread and screws into the plate underneath. The rest screw into the plastic body.

  3. Pentax ZX-5n Flash Capacitor Unit, Remove left front cover: 手順 3、 1の画像 1
    • 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.

  4. Pentax ZX-5n Flash Capacitor Unit, Remove front cover: 手順 4、 2の画像 1 Pentax ZX-5n Flash Capacitor Unit, Remove front cover: 手順 4、 2の画像 2
    • Remove one 3.4 mm #00 screw.

    • Remove two 5.3 mm #00 screw.

    • Gently lift up on the flash housing to help remove the cover if necessary.

  5. Pentax ZX-5n Flash Capacitor Unit, Remove right front cover: 手順 5、 1の画像 1
    • Remove two 3.9 mm #00 screws.

  6. Pentax ZX-5n Flash Capacitor Unit, Remove eye cup: 手順 6、 1の画像 1
    • Slide the eye cup up and off to access the screws underneath.

  7. Pentax ZX-5n Flash Capacitor Unit, Unscrew top cover: 手順 7、 3の画像 1 Pentax ZX-5n Flash Capacitor Unit, Unscrew top cover: 手順 7、 3の画像 2 Pentax ZX-5n Flash Capacitor Unit, Unscrew top cover: 手順 7、 3の画像 3
    • 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.

  8. Pentax ZX-5n Flash Capacitor Unit, Lift top cover: 手順 8、 1の画像 1
    • Lift the cover so it is just free of the body. It is still attached by several wires.

  9. Pentax ZX-5n Flash Capacitor Unit, Discharge flash capacitors: 手順 9、 1の画像 1
    • Use a 1kΩ-10kΩ resistor to discharge the capacitor. Place the resistor between the blue wire, exposed in the previous step, and ground.

    • The flash capacitors store energy at a very high voltage. Failing to discharge the capacitors properly could result in personal injury and/or damage to the camera.

  10. Pentax ZX-5n Flash Capacitor Unit, Release top cover: 手順 10、 1の画像 1
    • De-solder the green, blue, brown and black wires from the flash PCB.

  11. Pentax ZX-5n Flash Capacitor Unit, De-solder battery connections: 手順 11、 3の画像 1 Pentax ZX-5n Flash Capacitor Unit, De-solder battery connections: 手順 11、 3の画像 2 Pentax ZX-5n Flash Capacitor Unit, De-solder battery connections: 手順 11、 3の画像 3
    • Move the top cover to the side to access the battery connections. It is still connected by a flex cable.

    • 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.

    • Be careful not to overheat the flex circuit. Work in short durations. Allow for cool downs in between if necessary.

  12. Pentax ZX-5n Flash Capacitor Unit, Desolder flex cable: 手順 12、 1の画像 1
    • Desolder the flex cable connecting the top plate to the camera body.

    • Be careful not to overheat the flex circuit. Work in short durations. Allow for cool downs in between if necessary.

    • The top cover can be completely removed at this point.

  13. Pentax ZX-5n Flash Capacitor Unit, De-solder flex posts: 手順 13、 1の画像 1
    • Use a solder sucker to de-solder the four posts from the flex circuit.

    • This is the most difficult part of the repair. Patience and persistence are required.

    • Be careful not to overheat the flex circuit. Work in short durations. Allow for cool downs in between if necessary.

  14. Pentax ZX-5n Flash Capacitor Unit, De-solder flex connections: 手順 14、 1の画像 1
    • De-solder the marked connections.

    • Be careful not to overheat the flex circuit. Work in short durations. Allow for cool downs in between if necessary.

  15. Pentax ZX-5n Flash Capacitor Unit, Unscrew flex circuit: 手順 15、 1の画像 1
    • Remove one 4.3 mm #00 screw.

  16. Pentax ZX-5n Flash Capacitor Unit, Lift the flex circuit: 手順 16、 2の画像 1 Pentax ZX-5n Flash Capacitor Unit, Lift the flex circuit: 手順 16、 2の画像 2
    • Gently pry up the plastic carrier under the flex circuit. It may catch slightly on the battery contact tab.

    • Pay close attention to the connections around the four through-hole posts as you lift the flex. Make sure that no solder is left over and that it pulls away freely.

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

  17. Pentax ZX-5n Flash Capacitor Unit, Unscrew flash PCB: 手順 17、 1の画像 1
    • 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.

  18. Pentax ZX-5n Flash Capacitor Unit, Remove flash PCB and capacitors: 手順 18、 2の画像 1 Pentax ZX-5n Flash Capacitor Unit, Remove flash PCB and capacitors: 手順 18、 2の画像 2
    • 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.

    • The double sided tape used to secure the capacitors can be softened with isopropyl alcohol if necessary.

終わりに

To reassemble your device, follow these instructions in reverse order.

作成者

1人の作成者と共同作成されました。

Sam Gustafson

メンバー登録日: 09/01/22

3,233 ポイント

13のガイドは作成済み

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