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crwdns2933797:0Ben Moorescrwdnd2933797:0crwdne2933797:0
crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Ben Moores
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| [title] The Fault | |
| [* black] Inspecting the flex-pcb shows the likely fault. Over time the flex-pcb has developed a weak spot, which then becomes the point that flexes the most, causing it to weaken even further. | |
| [* black] Flexing the cable shows that this spot is bending at a sharp angle. | |
| - | [* icon_note] Note how the main ribbon splits into two, one side going to the motor and the other to a sensor. The narrower ribbons could also have a fault |
| + | [* icon_note] Note how the main ribbon splits into two, one side going to the motor and the other to a sensor. The narrower ribbons could also have a fault as they also flex (orange), but in this lens the fault occurred during flexing of the main ribbon (changing zoom as the barrel elements move), not as focus changed. I will only be repairing the main ribbon. |