This video looks at the fix for the three main reasons that water leaks into the toilet pan from the cistern. A simple washer/seal replacement can often be performed to resolve these, saving on the cost of a plumber for the fix.
This video is specific to leaks into the toilet pan for pushbutton toilet flushes. It looks and dismantles the fill valve (water inlet for the cistern), as well as removing the flush valve (the outlet from the cistern to the pan).
TImings
SUMMARY
#0:24 Issue shown (water leaking into the toilet pan)
#0:45 Summary of three main causes of water leaking into the toilet pan
#1:45 Cistern component summary (fill valve, flush valve and overflow)
REMOVING AND FIXING THE FLUSH VALVE
#3:27 Removing the flush valve from a toilet cistern, plus reasons and fixes for the flush valve causing a leak into the toilet pan
REMOVING AND FIXING THE FILL VALVE
#5:29 Reasons and one fix for the fill valve causing a leak into the toilet pan
#6:57 Finding the washer on the toilet cistern fill valve (only needed if you intend to repair rather than replace the fill valve)
#9:57 Sped up footage of replacement fill value (inlet) being installed