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Sony Alpha NEX Cameras Shutter Error Repair Guide
In this guide we will disassemble Sony Alpha NEX-3N camera completely to access the shutter assembly to repair the very common "Camera Error. Turn power off then on." fault (see the example video of the error on this page).
The disassembly guide can be helpful for other Sony Alpha cameras. The shutter unit is shared among most of the Sony Alpha series, so the repair may also be applicable to other Sony Alpha cameras.
Before starting the repair procedure please carefully read all the steps in this manual. The camera has a high voltage flash circuitry inside, which is indicated in the steps several times. Be careful and do not touch the circuitry, it may injure you or be lethal. For this repair you only need a Philips #00 screwdriver and a pair of tweezers.
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Videoya Genel Bakış
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Start with removing the SD card, battery, and the lens from the camera.
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The mainboard has 8 flat flex cables connected to it. 2 of them are hidden behind.
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One of the flex cables may have high voltage from the flash charge circuit, so be careful when touching around. The flex cable is at the back of the unit, in the area marked with red circle in the first photo.
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The bottom two flat flex cables have ZIF connectors with locking tabs. The rest are pressure fit, just pull them away gently using tweezers.
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Remove the lens mount, shutter and sensor assembly from the camera body.
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Remove 3 marked silver self-tapping screws to release the sensor assembly. Pay attention to the sensor adjustment shims. Do not misplace them.
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Do not touch the sensor surface. Keep it at a safe and clean location.
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This step is the actual repair procedure for the shutter error.
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The error is caused by a weakened shutter return spring. Due to extensive use it doesn't have the power to close the shutter.
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Normally the motor opens the shutter curtain and engages the mechanism with a small neodymium magnet.
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When the electromagnet is activated, the neodymium magnet is disabled and the shutter curtain has to travel towards closing direction with the help of the return spring.
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However, when the return spring is not strong anymore, it cannot move the curtain.
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For repair, using a pair of tweezers, turn the spring adjustment wheel (the black round wheel with teeth, bottom one shown with red arrow) for 2-3 clicks towards the direction of green arrow. Compare the first and the last photo for the amount of rotation, it is only a tiny bit!
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This should do it.
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Re-assemble everything back in the same order of disassembly. Be careful when connecting the flat flex cables. It is very easy to damage them.
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Test the camera. It should work now, but in case the error persists, try moving the spring adjustment wheel for one or two clicks more.
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If it still doesn't work, you may need a new shutter assembly. There are plenty on sale, you can find it if you look for it.
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Good luck!
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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