Model 1800 not showing objects

A

Anonymous

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I have a furuno radar model 1800 from late 80's when in turns on it has a x 14 in the upper right hand corner of screen I don't remember seeing this I forget, it worked fine last year and is giving me problems this year it works has power and sweeps but I can usually only see land or objects for one sweep then they disappear . I noticed on plug that attaches to monitor in back might be missing a pin any help would be thankful chris , I have been trying to tune in front not back yet per manual as it did work fine
 
Yes I have photo I believe I don't think I deleted it after the 2:30 count down it goes to st-by and has a x14 in upper right hand corner I don't remember seeing this
 
It would really help if you could provide a photo.

Based on the description and looking through the old manual, it sounds like the IR indicator showing you have the interference rejection turned on. The IR looks a lot like a 14.
 
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