Hi, The title pretty much says it. The display doesn't light up and there is no other sign of life from the unit. Parts guy at Culligan says he never saw this from a bad circuit board, and he said that it's probably the power connection. My tests: first checked the wall outlet to be sure that there was power to it. There was. Then pulled the cover off the control unit. The 3 (black, white, green) power wires going into it are all in fine shape. The ground connection for the green wire is clean and tight. The block connector that the black and white wires go into likewise. All of the components on the circuit board (IC's, electrolytic caps, dip switch, and resistors) are tight. So I'm stumped and at the end of my ideas. Thanks for any help. Peter

We recently purchased a new home with a well. The water has several issues that need to be corrected. I'm trying to determine what conditioning equipment I need. Here are what I think are the key parameters (the range of values represent tests done at different times by different people). Hardness 7 - 11 Iron 0.3 - 1.0 pH 7.1 - 7.8 Manganese 0.0 - .04 Hydrogen Sulfide 0.4 TDS 157 - 176 I have had several water conditioning companies come to the house, test the water, and provide quotes. Their recommendations include a water softener plus one of the following: manganese greensand filter, Pyrolox oxidation filter, air induction system + Birm filter, and dual media softener with KDF. The greensand filter apparently needs regular regeneration with potassium permanganate. The KDF was claimed not to need replacement or regeneration. I didn't get much information on the Pyrolox filter. Do I really need anything more than just a water softener (with maybe a sediment filter) for this water? Are there some softeners that use significantly less water during backwash? Do I need something else to address the iron and sulfur smell? If yes, what are the advantages and disadvantages of manganese greensand, Pyrolox (which I believe is chemically the same as the greensand), Birm, and KDF? I am particularly interested in a solution that is reliable and doesn't require a lot of backwashing. Our well and pump can deliver 8.5 gpm. I see that some softeners monitor water usage and adjust the regeneration schedule accordingly. Are they reliable?