How many years of warranty? 1 year
During the "tak tak" sound, look though the viewvinder and observe if you can see abnormal movement inside. If it's moving up and down or sideways, something must be wrong.
For a normal condition: during the "tak-tak" sound the VR element will rotate a bit to lock or unlock. No abnormal movement inside the viewfinder.
During the unlock mode: the VR element will be "floating", seated on 3 ball bearings and can move freely in it's X-Y axis
Thank you fatigue for your reply and advise. Also thank you for starting this thread as all the postings were definitely helps if I decided to DIY. The len should be purchased some time ago, so no more warranty. Guess DIY maybe the way I am considering.
Ok, seem like "tak-tak" maybe normal as the VR may need to initialize itself? However, while the camera still at the "ON" state, it will happen again. Looking through the view finder before and the whole screen seem to shake upwards when it "tak-tak".
One thing to highlight is that the len seem to have something knocking inside when shake a little. Maybe is the "floating" element as you mentioned. Hope is normal. Thank you.
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