Answer: I think you were right in leaching excess salts from the soil. At this point I would not fertilize the palm. It is struggling and needs time to recover before it can put out new growth. Don't feed it and don't spray it with fertilizer. Just put it in a spot with bright light but no direct sunshine and keep it out of drafts from fans or air conditioner vents. Just keep it watered and wait until you see healthy new growth. when you do, you can cut off the dead or dying fronds to make room for the new fronds. Best wishes with your palm.
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