Power to the unit is normal but exit power to the sender is not.
Any suggestion on how to remedy the situation will be greatly appreciated.
Witold
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12-06-2022 01:27 PM #1Senior Member
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- Mar 2007
- Posts
- 90
Tachometer transmitting unit for 58' 1976 Yacht Fischer
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Re: Tachometer transmitting unit for 58' 1976 Yacht Fischer
I assume your typing about the tachometer sender on one of the main engines.
Question; is it mounted on the synchronizer box or on the engine?
Those senders are pretty solid devices, most times the mechanical tach cable is loose or failed. Next a bad wire or crimp.
IMO, to the bottom of the list is the sender has failed.
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12-07-2022 08:08 AM #3
Re: Tachometer transmitting unit for 58' 1976 Yacht Fischer
The transmiter has a square shaft thats plastic it may have snaped therefore it will not transmit the electrical signal. Unscrew the unit and take a look. Good luck I hope this helps.
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12-10-2022 11:40 AM #4Senior Member
- Join Date
- Mar 2007
- Posts
- 90
Re: Tachometer transmitting unit for 58' 1976 Yacht Fischer
Problem solved!
By removing the Positive and Negative hookup from the sending unit and cleaning same with sandpaper solve the problem.