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Forum: Troubleshooting and Beginner Help
05-05-2019, 06:20 AM
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Are you using the 1.4 converter? I ask about the 1.4 converter because when mine started to die, I got that buzzing sound you describe, though it never tried to go into screw drive. I took the converter off, the buzzing stopped happening, and it died a slow quiet death.
When the SDM in my DA*300 started to die, it either would not focus at all, or it would start to focus, but stop before it ever locked focus. Sometimes, I would have to spin the focus ring from lock to lock and try again and it would start working again. Eventually, it just completely quit.
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