Geeper,
I have not had this same problem yet on my AquaLogic PS-4, but I might have some ideas you could try.
Disclaimer - If you are not comfortable around 240 Volts or around electrical circuitry in general, do not try this at home. The voltages and currents inside the AquaLogic can and will easily KILL you.
I would try the following steps:
1. Check the 3 Amp fuse (mini automotive type) at the bottom right of the circuit board.
2. Check the 20 Amp (mini automotive type) fuse at the upper right of the circuit board.
3. The large transformer located to the right of the circuit board (the one NOT on the circuit board) is the transformer for the SWG cell. Check for loose connections at the multiple locations that this transformer connects to the circuit board. This might entail you having to remove either the large transformer, the main circuit board, or both, in order to have adequate access.
I wish I had a circuit diagram for the AquaLogic but Hayward/GoldLine did not include it in their owner's manual. The only difference in the PS-4 or PS-8 or PS-16 is in the local display and the number of high voltage relays. The main circuit board is the same for all of these units. Somehow the "flavor" of the local display (i.e. PS-4 or PS-8 or PS-16 local display) somehow tells the logic on the main board that it is a PS-4 or PS-8 or PS-16.
I hope this helps. Let us know what you find out.
Titaniumboy
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