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Raymarine bottom machine gets weak.

Old 06-26-2014, 08:47 PM
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Default Raymarine bottom machine gets weak.

It doesn't seem to matter the depth (100-1000ft) and the bottom will read perfect and then just get light blue. Engines are running so I have full voltage. The a few minutes later it goes back to normal and the later it's weak again. I have a DSM 300 and it's made in mexico. It used to lock up but they replaced one of the cables last year and it took care of the problem. Any ideas?
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Old 06-26-2014, 09:03 PM
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To my untrained eye it looks like interference, it's too rhythmical.
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Old 06-26-2014, 09:23 PM
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My iphone puts those black bars in the picture. They are not there unless looking through the camera. Forgot to mention that
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