I bought a new to me 25' cruiser. It came fully equipped with dated electronics, most of which i plan to upgrade very soon. However the Radar is a SL70, and due to my limited use I do not want to replace if not needed. .
The unit seems to function as it should. It has no errors, it does its circle "sweep". However it just reports a "grainy" display. (Dark rings)
I have read what I can, performed the self test with nothing of note reported, all passes. Performed a factory reset. Same results.
I have checked all connections, nothing loose, nothing corroded. I pulled the cover off the dome, it is clean, the unit is spinning as I assume it should.
Is there anything else I should be checking before ripping the unit off the boat?
I tried to attach the photos showing what its reporting.
Thanks for looking!



The unit seems to function as it should. It has no errors, it does its circle "sweep". However it just reports a "grainy" display. (Dark rings)
I have read what I can, performed the self test with nothing of note reported, all passes. Performed a factory reset. Same results.
I have checked all connections, nothing loose, nothing corroded. I pulled the cover off the dome, it is clean, the unit is spinning as I assume it should.
Is there anything else I should be checking before ripping the unit off the boat?
I tried to attach the photos showing what its reporting.
Thanks for looking!


