Search on YouTube for "***Gen 2 Prius Cluster Combination Meter Fix DIY"***. It worked for me, saving me about $1200 from what the dealership would charge. Total cost to me was about 60 cents and a couple hours of my time.
It WILL require you to take your dash apart, and at that point you can either ship the cluster to someone to repair (I've seen about a 10 day turn around and around $150 fee), or you can do what I did and solder a new capacitor onto the board. Up to you. :)