Electronics > Repair
Zodiac Tri Pool Chlorinator Repeated Zener Diode Failure
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Uunoctium:
may you proof if that equals your component?


Fairchild/Onsemi.
Family:  FSQ0365RN, FSQ0265RN, FSQ0165RN, FSQ311

https://pdf1.alldatasheet.com/datasheet-pdf/view/162475/FAIRCHILD/FSQ0265RN.html
MTBACHO:
Hello!!! YES! it seems like the IC has the correct pinout!!
I am really thankfull Uunoctium for your info!
 I will keep things posted as soon as I get hold of a IC.
Thanks again!
MTBACHO:
Hello again to all!!
My zodiac IE is up and running, the small power supply has started to oscillate and producing the 18v that the controller board requires.  On the other hand I haven't managed to get the Power MOSFET I require to get the PFC running properly so I just Bypass that part of the circuit. It is was an easy bypass as the PFC circuit is a stantalone circuit. Hope it lasts for the rest of the summer without having to pull it apart again. Just wondering, but running it without the PFC shouldn't make much of a difference on 220v.
Again I would  like to thank the community and special thanks to Uunoctium and Frankster for the wise information they have shared.

Regards From Spain! 
Frankster:
Thread necro, I know, but this is so good to hear that you were able to work out the blown IC and repair this Zodiac Tri. Info I have denotes U6 is a FSQ311. My original Zodiac Tri was an early 1st gen model with a single PFC/PWM FAN4803 chip and the small PS for control was iron core analog type with 3 pin reg. The unit you had was either a 2nd or 3rd gen unit where small PS was a SMPS based on FSQ311, and cell power was based on individual PFC chip NCP1653A and PWM chip UC3845B. 2nd and 3rd gen units were very similar but not identical circuits. If anybody wants a ton of info on repairing these units, go to https://forums.whirlpool.net.au/thread/380q8kq3, but be warned, it's 42 pages, so lots of meandering but contains our own traced schematics and fault-finding and repair info from a few of us that refuse to let go!
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