We just purchased a used Vita L200 that was supposed to work find. Bring it home and hook up all electrical and display panel flashes on for an instant and displays clock, a temp reading and then p6 code and shuts off. Im totally dont know what to do.....Anyone help? thanks...Chris

Pb (Power board) is a misscommunication code....
Try disconnecting all connections on the board ( they look like telephone jacks) EXCEPT water, high limit and circ pump......then reconnect one at a time until Pb shows again, last one reconnected will be the faulty part..