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Author Topic:   SONAR Transducer Cable Repair
ocean31 posted 02-26-2012 07:07 PM ET (US)   Profile for ocean31   Send Email to ocean31  
Help. While installing my new transducer for a Navman/Northstar 4200 fishfinder, I accidently partial cut the cable. Thankfully the cable is cut near the connector to the head/display unit. Now, I find it hard to belive I can not find a new connector for this unit. It is a 8-pin [connector]. [Seeks] a good source, assistance on fixing this partial cut cable. Thanks--jsb
contender posted 02-26-2012 08:13 PM ET (US)     Profile for contender  Send Email to contender     
How close to the connector are you? Can you work on it were it is? Can you pull the cable out? How about the dealer? It might be just as easy to purchase a new transducer. Can you solder?
ocean31 posted 02-26-2012 09:32 PM ET (US)     Profile for ocean31  Send Email to ocean31     
Thanks for the reply, I am fairly close to the connection, plenty of cable left. I can solder but these are very small wires wrapped in a very thin coax sheath. THe dealer simply says buy a new transducer, they do not sell the ends. Just seems crazy to me, that you can not buy a 8-pin female connector and redo the end. Spend too much time on this and it will end up being cheaper to just buy a new one. Thanks for the reply though--jsb
jimh posted 02-26-2012 10:10 PM ET (US)     Profile for jimh  Send Email to jimh     
Moved to SMALL BOAT electrical.
jimh posted 02-26-2012 10:19 PM ET (US)     Profile for jimh  Send Email to jimh     
If you can identify the manufacturer of the connector you can probably buy a new one for less than $10--marine electronics do not tend to use expensive connectors. A vendor like MOUSER or DIGIKEY will have thousands of connectors in their on-line catalogue. You may be able to figure out what connector you need. Otherwise, just splice the wires. At SONAR frequencies there should not be a problem with a good splice in the cable.
jimh posted 02-27-2012 08:23 AM ET (US)     Profile for jimh  Send Email to jimh     
Also, since you have the original connector, you can disassemble the original connector, remove the existing wiring, and re-use it. If the connector has been molded to the cable, just carefully cut away the molded plastic portion.

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