Difficulty
Moderate
Steps
17
Time Required
3 minutes
Sections
3
- Body Cover Removal
- 8 steps
- Detach LCD Flex
- 7 steps
- Flash Capacitor Unit
- 2 steps
Flags
1
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BackPentax ZX-5n
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Introduction
What you need
Step 1
Remove back cover
- Push down on the screw to depress the spring loaded hinge and release the door.
Push down on the screw to depress the spring loaded hinge and release the door.
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Step 2
Remove bottom cover
- 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.
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.
Step 3
Remove left front cover
- 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 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.
Step 4
Remove front cover
- 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.
Remove two 5.3 mm #00 screw.
Gently lift up on the flash housing to help remove the cover if necessary.
Step 5
Remove right front cover
- Remove two 3.9 mm #00 screws.
Remove two 3.9 mm #00 screws.
Step 6
Remove eye cup
- Slide the eye cup up and off to access the screws underneath.
Slide the eye cup up and off to access the screws underneath.
Step 7
Unscrew top cover
- 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.
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.
Step 8
Lift top cover
- Lift the cover so it is just free of the body. It is still attached by several wires.
Lift the cover so it is just free of the body. It is still attached by several wires.
Step 9
Discharge flash capacitors
- 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.
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.
Step 10
Release top cover
- De-solder the green, blue, brown and black wires from the flash PCB.
De-solder the green, blue, brown and black wires from the flash PCB.
Step 11
De-solder battery connections
- 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.
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.
Step 12
De-solder flex posts
- 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.
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.
Step 13
De-solder flex connections
- 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.
De-solder the marked connections.
Step 14
Unscrew flex circuit
- Remove one 4.3 mm #00 screw.
Remove one 4.3 mm #00 screw.
Step 15
Lift the flex circuit
- 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.
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.
Step 16
Unscrew flash PCB
- 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.
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.
Step 17
Remove flash PCB and capacitors
- 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 contact cement used to secure the capacitors can be softened with isopropyl alcohol if necessary.
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 contact cement used to secure the capacitors can be softened with isopropyl alcohol if necessary.
To reassemble your device, follow these instructions in reverse order.
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Sam Gustafson
Member since: 09/01/2022
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