Looks like too much water to me

Stick your finger as far down in the soil as you can to see for yourself. Also, what variety of palm is that? Different palms require different moisture levels. Personally, I would take it off of the drip irrigation and just water deeply once a week. That should solve your problem.

Thanks. Its a pigmy date palm/ I will try the test you suggest

I read that lack of potassium was the cause of palm leaves browning in Hawaii. If all other conditions are good, that may be the problem
I didn't pay much attention to the article so you will have to do the research.
Google Potassium Deficiency Palm

My Phoenix Robellini was doing good it would droop when it needed water, I put it in a bigger pot now the leaves are turning brown. Don't know if it's to much water or not enough. I have it in full Sun in Hawaii ,it's been in the same location for over a year. ALOHA