Raymarine ST4000+ - bringing it back to life

DonGoodeve

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28 Aug 2025
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Hi All

I have an ST4000+ wheel drive installed on my 38' C&C. It has been working well until about 3 weeks ago when it lost the ability to read direction. Troubleshooting so far:

1. Checked all continuity on fluxgate wiring
2. Replaced fluxgate core
3. Cursory check over electronics with aid of a service manual
4. Mistakenly followed the instructions in 'ST4000+ No dockside calibration' to perform a factory reset, and now having difficulties persuading the unit it is an ST4000+ again.

Any informed suggestions are very welcome; very much hoping to bring this unit back to life.

Cheers
Don
 
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