Troubleshooting steps for common problems with the Canon EOS 70, a DSLR camera released by Canon in 2013.
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Camera powers down shortly after being turned on is an indication of a faulty battery, faulty charger or bad battery connection.
If the camera repeatedly dies after being powered on, the battery is not holding a charge or is not correctly connected. You should inspect the battery connection and may consider replacing the battery as shown in this guide Battery Replacement Guide.
If your battery and connection checks good, the charger may not be doing its job to charge the battery. You may consider replacing the charger.
If the camera will not turn on at all and the battery has been checked, then it is possible that the motherboard may have become faulty. You may consider replacing the motherboard using this Canon EOS 70D Motherboard Replacement Guide.
While trying to take a picture, if the picture remains blurry and does not ever become clear, this is a common symptom of a focus component problem.
If you cannot get the camera to auto/manually focus, you should consider replacing the focus main board in lens using this Focus Main Board Guide.
While camera is powered on and the top screen has a display, if the camera flip screen does not show an image, the screen may be damaged.
If your screen is cracked or damaged, you should replace the camera screen using this LCD Touchscreen Replacement Guide.
If you take a picture and receive an “SD Card Error” message on screen, you may need to reformat the SD card.
If the error message “SD Card Error” pops up on screen when a picture is taken, you should reformat the SD Card using this Reformat SD Card Guide.