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Old 13-07-2012, 02:41   #1
noelex 77's Avatar

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Join Date: Jul 2007
Location: Full time cruising. Currently in the Med.
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Simrad display fault

My Simrad NX-40 chartplotter has recently developed a bubble in the top right hand corner and it's gradually getting a big bigger.
It's a bonded glass display on this chartplotter so I presume some of the fluid that is between the LCD and the glass face is leaking out.
Is thre a fix?

The unit is out of warranty and a google search did not show anything.

Anyone have any ideas.
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Old 13-07-2012, 05:01   #2
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Join Date: Jan 2011
Location: Geelong, Victoria, Australia
Boat: Hunter 40 Legend
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Re: Simrad display fault

This is a fault in the NEC screen unit. I had a Northstar M84, the same unit in a different box. It didn't seem to affect the operation of the plotter. However one day when the unit was about 3 years old the screen went black. I traced it to the failure of two very thin fluorescent tubes that light the LCD screen from the bottom edge. The electronics still functioned but could not be seen as there was no light in the unit. I tried to replace the tubes with a LED replacement but only managed to "fry" the LED also. It was operational in pieces on the bench but when I assembled it I must have shorted something and smoke billowed out! The screens and fluorescent tubes are replaceable if you don't mind opening the unit. The displays are available on Ebay for around AU$700.
Regards Craig
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