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Yamaha 25hp voltage rise problem

krojsu

New member
Hello , I have a problem with my yamaha 2 stroke outboard , YOM 1999. This relates to voltage variations. Last week i noticed that the volt meter displayed on the fishfinder was indicating 16.8v when running at full throttle. When idle it reads 12.5v. Unfortunately it happened all of a sudden and damaged my vhf ( sound problem ) and also burnt some led lightning.

This is what i have done recently to try and solve the problem:

I have replaced the battery and fault still persisting,
I disconnected the output of the regulator/rectifier and read voltages and still voltage was high at wide open throttle.
i replaced the regulator/rectifier and still with the same problem.

Can anyone help ?
 
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