PCboard Tutor:

What Can cause a pcboard to fail?  PCboards fail because of power outages, surges, and brownouts. Lightning is a common cause of pcboard failure. The spike or surge of volts can destroy the board. Also the relays on the board can fail or even connections. It's most common to replace the board than to try to fix or work around features of the board and make the board unsafe or unreliable.

How Do I tell which board I have?  Basically, you ID a board by the chip on the board. It will have numbers on it. Most boards also have their part number printed on the edge of the board.

Is it easy to install a new board?  Spa boards are much like replacing a pcboard on your computer. All you have to do is be systematic with your approach. Even after replacing many boards since 1995, I still disconnect as few wires as possible noting which I am removing, swing the old board out, install the new board, and move wire by wire from old to new.

What if my new board has parts or connections moved?  This is common. As boards are upgraded, the OEM will move relays or connections. They are labeled. IF you are connecting a wire to a relay, just look at the old relay and match the spot on the new relay that is the same. IF you are in doubt, contact us before you proceed.