1731 MK3 Problem

A

Anonymous

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Unit works perfectly for as short a time as one sweep to 10-15 minutes. Continues to scan but loses all echo with the exception of what I assume to be clutter from my boat. If I turn the unit off for some time it will again work for some period. Sounds like something is overheating. Any suggestions as to cause & solution?

Thanks in advance.
 
Then it is most likely the IF amp going bad in the scanner or the SPU board in the display. It would have to be troubleshot by a qualified tech. I would recommend you get with your dealer or send the unit into the service center for repair evaluation.
 
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