620 Problem

A

Anonymous

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Have a 620 that had worked perfectly until a few days ago when it shows a white screen. Sometimes in very shallow, 8-20 feet it will draw a thin line for bottom, but then stays white. Menu items appear fine, it just appears that it cannot find depth. Checked transducer and no growth on that or anything blocking it.
 
Madmescan,
It is hard to visualize what you are seeing. Does this happen on both 50 & 200Khz? I would try resetting the sounder to it's default settings. You can find the RESTORE function at the bottom of the menu tree. If this doesn't help please post a screen shot of the display.

Snips
 
It happens at both frequencies. Not sure how to insert pics, I have them in my camera
 
Click on upload attachment, then browse to find where you stored the picture(s) and then add the file. You will need to repeat this procedure for each screen shot.

Snips
 

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Attached are the pics. The one that shows bottom, very shallow I get when at the dock. Few minutes later, still in shallow (leads than 12 feet) it goes blank. Sometimes showing a line (second pic) if less than 200 feet.
 

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Madmescan,
The 620 has been around for a while and its track record is very good. In the past when one had a problem it was a consistent one and not intermittent. Intermittent issues tend to be more transducer or cabling related. At this point probably the quickest way to sort things out is to take the 620 into a Furuno shop and have them bench test it.

Snips
 
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