So, here's the thing. This is either my second or third trip to do this same quest. I believe it was a random quest given by a steward of one of the holds. I fast traveled there and no dragon. I get the "sizzling" sound and chanting/music voices like your learning a new shout but no part of the wall is light up and I have already learned that word. I didn't really find this problem after doing a search of the forums. The only other answer I found from Google is wait 30 in game days and it doesn't seem to work for everyone. Anyone else have any other suggestions?

The things with these quests that are given when you choose the "im looking for work" options is that they are random. If you cleared the location before getting those quests, then the enemies won't ever spawn. A way to know if the enemy that you gotta kill has spawned is you go to the misc quest, press square to show on map and if the quest doesn't have a quest marker then the enemy will not be at the location and it might never respawn again and the quest will be forever in the journal.

My suggestion would be to save before getting any of these quests and once you get the quest, see if it got a quest marker. If it doesn't have a quest marker reload and try again.

And FYI, that 'wait 30 days' thing is a myth. There's about 3 scripts (amongst thousands) in the entire game that actually self-repair in that fashion.

I've never had this kind of problem meself before, nor with any other word walls. I remember this location well since I went there last time I played Skyrim. That word wall contains all the three words for shout "Throw voice". Also there is a coffin on the ground which spawns a Dragon priest (Krosis), when approaching the wall.

So my question is, did you kill Krosis before approaching the wall? Did he rise from his coffin?
Just thought that maybe the word wall is bugged because Krosis (and the dragon) are not there? If that is the case, then indeed, probably the best solution is to wait for 30 days, to make them spawn/respawn again.

One other solution (which I would definetly try) would be to load an earlier save, and not to fast travel on that location. Just travel there by foot/horse and see if they spawn again.

Sigh.

At best, this would cause 'trash mobs' to respawn, nothing more. Quest-specific objects, NPCs and mobs have unique IDs and thus do not follow the same rules for respawning. This whole '30 day' nonsense is a misconception based on an Oblivion bugfix. It couldn't possibly effect word-walls, 'roosted' dragons etc.

Your other suggestion (earlier save, don't fast travel) might bear fruit, depending on the actual cause of the bug. Ultimately, any Radiant quest (such as those given by stewards to kill 'X') is prone to bug out in this fashion, and the only foolproof solution is to reload a point before the quest was generated, or accept defeat and leave it there in your quest log forever.

(Answer based on several hundred hours using the TESCS)