B&G Sonic Speed failure

David Crisp

Hi All,

The sonic speed on Wilna Grace has not worked for sometime so with the wisdom learned from this group I've been investigating.  Adjusting the spacing knob on the processing unit I'm unable to get the red light to come on. 
I have disconnected the transducer cables and tested them and all seems okay: - 111.4kΩ on one transducer and 111.7kΩ on the other which seems in tolerance and infinite resistance between all cables and the shielding.  Any advice on what I should check next?

David Crisp
SV Wilna Grace
Amel 54 #58

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