If a dual-flush or single push-button toilet actuator stays stuck down in the depressed position after flushing, the issue is typically caused by mineral scale buildup around the plastic button rods, a misaligned top tank lid pressing against the push stems, or a stuck internal valve basket. Remove the tank lid, check the connecting rods or cables beneath the push-button mechanism, clean away any sticky residue or hard water crust, and ensure the rods are adjusted to the correct height without binding. Verification: Press and release the push button multiple times to confirm it springs back up smoothly and freely.
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