I have problem with all my Powered Spawners. They won't spawn mobs i turn them on it goes to 100% and nothing. I don't know what is happening never had this bug.
Cpt it depends what are you spawning because some monsters need space to spawn. For example enderman need 3 block height.
im spawning cow in room like high 3 blocks and from spawner walls are 3 blocks. EnderMan worked but now they are not working (i have big room for enderman)
no they dont i spawn them on stone bricks. cpt maybe you have reached the mob cap. Try using magnum torches to prevent mobs spawning in other chunks around your spawner. The magnum torch has a 64 block radius so 32 in each direction. That's 2 chunks space, place them around 3 chunks away from your spawner and you will be fine
Well my english is not perfect So if he understood what i meant its fine (i hope) Thank you for correcting me. We always learn.
Magnum torches dont affect spawner. The Powered Spawner is in my eyes working like - checking the area no mobs close, spawn. If there are mobs They will just animate the spawn and use the power, thats what i've seen at my spawner. Can be wrong but thats something not spoken on this thread
I believe the server has a mob limit plugin that blocks spawning even from machines like powered spawner if there are already more than a certain number of mobs in nearby chunks, using magnum torch stops all natural mob spawns so they don't cause your area to reach this limit, so then the powered spawner can work right without the plugin stopping it.