HelloCustomerbr />The charger and the cluster itself were known causes to blow that fuse!
When the think first came out, it was fitted with a charger that would cause all kinds of problems, overcharging, undercharging, shorting the instrument cluster. If your charger is humming, then you have the old charger. Ford later came out with a updated charger that doesn't hum and has no issues with it. Here's a pic of the new charger to help you identify it.
If you don't have this charger then you got the old one!
If your fuse is good, and your total battery voltage is good (around 72v, sometimes if a battery was put in wrong this will happen too, but your voltage won't equal 72v it will be 58 or lower), and the cluster does not come on, than your cluster has to be blown. It could possibly have a bad wire but I've never seen it.
Sometimes they would blow up and you could actually smell burnt electronics when you take it out. Here's a video on how to take it out, and you can smell it to see if its blown. Remember though, it doesn't smell all the time when it blows!
Here is the link in case it doesn't go thru! Ford cluster removal
Yeah i know it costs alot to repair, I've worked on these since they first came out in 2002. Unfortunately everything is expensive on these. My testing has always been very accurate. If you test the cart like the first video shows, then it will direct you to replace the correct part. If you have the old charger, you'll probably want to replace it to help keep it from happening again.
I'm sorry there is no quick fix for this or cheap, but I've worked on these carts for a long time, and this is definately the best and correct advice.
If your satisfied with my answer please click accept, if you need more help please feel free to ask!