"HP part number 5081-3024

Used also in the 1710B and the 1722B. "

Thanks. Having the right part number helps no matter what. I notice both of those numbers are lower than 1725, should I assume then that the 1725 is the best of the "family" ? If that's the case, the mystery remains of why this one got the axe. Of course the thing might have just went bad, it does happen.