Originally posted by xunwp This is what I did on the "horse shoe" armature. It works! Cheers!
Bad news, the aperture problem comes back when the Lion battery is
fully charged, while it does work well when the battery is not fully charged. However, the aperture problem is slightly different from that before I repaired it using the Russian method, the following are the details.
When I switch to LV mode, the aperture shrink to the correct F stop first
, then after a very short delay (maybe less than 0.1s), it continues to shrink to the minimum
. So it seems that the solenoid fails to hold the aperture in correct position when it should do. This problem occurs at about 20% probability when I switch on/off LV mode. BTW, the aperture always works fine with depth of field preview button.
I think it is a voltage-related problem since it only occurs with a fully charged Lion battery. This agrees with the fact that AA batteries can help solve the aperture problem. AA did work on my K30 for the last year until it got worse.
Perhaps I have to pick up my AA batteries again. I wonder whether it is because I sand the "horse shoe" too much. However, it is very strange that a fully charged battery causes the aperture failure.