Hello,
I own an old Hayward aquarite PRO SWG :
I have permanent NO CELL POWER issue + random System check NO CELL POWER 1.
Issue on both polarities.
I read most threads on this forum related to No cell current on aquarite SWG.
Most failure causes come from : bad relays, fuses, bad thermistor, failed rectifiers or weak solders.
So I checked these points on my board .
-16A and 1.6A glass fuses are OK, continuity checked on the board.
-Cell supply relays K9 & K10 are OK.
-DC supply relay K6 is not working properly : I unsoldered it and checked it OK : coil resistance = 153 Ohms similar to thew two other relays. This relay is defective, no consistant connection when Command ON.
So I removed this K6 relay, shorted DC power to the K9/K10. With that mod, the cell is powered correclty with good DC voltage : 24-30VDC on both polarities, but the logic board still generate No cell POWER ==> seems voltage / current monitoring is not working.
-Weak solders ==> I resoldered all pins without any improvement
-Black Thermistor 50D9 measured @58.2 Ohms seems OK
-Red Varistor measured @4.7 Ohm
It seems I have a control issue on this board, I can exclude : 16A & 1.6A fuses, K6, K9, K10, rectifiers, transformer, Weak solder.
My board pics :
One overheat area on the bottom of the board.
Checked the board with IR camera and identified temp over 80°C around two resistors in parallel (measured around 127kOhms) close to U5 : an H11L1 (Schmitt Trigger Output Optocoupler), this area matching with backside darkened area :
This short circuit connects H11L1 PIN 1 to PIN 2 (emitter circuit).
Bottom of resistors in parallel connected to the 250 VAC IN of the small 12V PSU. So this IC seems to detect is PSU is powered.
Does someone have the schematics for this logic board : G1-015073B-1T to see if I can go further in the troubleshoot ? Any other known weak component that could match with this failure ?
As the price of this board is ridiculously high, I would really like to repair it... In parallel, I'm searching for other defective boards.
I own an old Hayward aquarite PRO SWG :
I have permanent NO CELL POWER issue + random System check NO CELL POWER 1.
Issue on both polarities.
I read most threads on this forum related to No cell current on aquarite SWG.
Most failure causes come from : bad relays, fuses, bad thermistor, failed rectifiers or weak solders.
So I checked these points on my board .
-16A and 1.6A glass fuses are OK, continuity checked on the board.
-Cell supply relays K9 & K10 are OK.
-DC supply relay K6 is not working properly : I unsoldered it and checked it OK : coil resistance = 153 Ohms similar to thew two other relays. This relay is defective, no consistant connection when Command ON.
So I removed this K6 relay, shorted DC power to the K9/K10. With that mod, the cell is powered correclty with good DC voltage : 24-30VDC on both polarities, but the logic board still generate No cell POWER ==> seems voltage / current monitoring is not working.
-Weak solders ==> I resoldered all pins without any improvement
-Black Thermistor 50D9 measured @58.2 Ohms seems OK
-Red Varistor measured @4.7 Ohm
It seems I have a control issue on this board, I can exclude : 16A & 1.6A fuses, K6, K9, K10, rectifiers, transformer, Weak solder.
My board pics :
One overheat area on the bottom of the board.
Checked the board with IR camera and identified temp over 80°C around two resistors in parallel (measured around 127kOhms) close to U5 : an H11L1 (Schmitt Trigger Output Optocoupler), this area matching with backside darkened area :
This short circuit connects H11L1 PIN 1 to PIN 2 (emitter circuit).
Bottom of resistors in parallel connected to the 250 VAC IN of the small 12V PSU. So this IC seems to detect is PSU is powered.
Does someone have the schematics for this logic board : G1-015073B-1T to see if I can go further in the troubleshoot ? Any other known weak component that could match with this failure ?
As the price of this board is ridiculously high, I would really like to repair it... In parallel, I'm searching for other defective boards.
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