How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Russell H. Your Own Question
Russell H.
Russell H., Service Tech
Category: Marine Electronics
Satisfied Customers: 10782
Experience:  8+ years of professional experience
Type Your Marine Electronics Question Here...
Russell H. is online now
A new question is answered every 9 seconds

I have 2007 GPSMAP 4210 Sonar nor Depth show up on my home

Customer Question

I have 2007 GPSMAP 4210 Sonar nor Depth show up on my home sheet or when I use fish3d view or Marine's eye-I do have a chip but it does show view up to 800' ?
Submitted: 1 year ago.
Category: Marine Electronics
Expert:  Russell H. replied 1 year ago.

Hi, thank you for contacting My name is Russell. I will do my best to provide the right answer to your question.

It sounds as if your Sonar Transponder is not giving you depth indications.

Not a problem with a 'chip' at all. It might be something wrong with the transmission of the sonar transponder's signals.

Check the cable to that sonar transponder along its full length, for cuts, severe bending, or other damage.

With the power to the system Off:

Undo each connection along the route from GPSMap 4210 to sonar transponder, one at a time, scrub each connector with a clean dry brush for 20+ seconds, then wipe each side of the connector with a clean dry rag cloth until the metal shines, and re-connect firmly, then on to the next connector.

Then power it On, and see if the Sonar now reads the Depth OK.

Related Marine Electronics Questions