Spent 3 hours trying to figure out why controls inside a Repeater template would not raise events. Felt like events just never reached my child controls. Inspected form parameters and there was information with the client ids of Repeater's child controls.
Cause: was binding the Repeater in PreRender()
Solution: moved binding of Repeater to Page_Load to enable event processing by child
controls.
Hope this will help someone else.