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Graphtec cutter screen shows only faint boxes when turned on

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Hello;

I own a Graphtec Cutting Pro FC4100-75 

My problem is when turned on, cutter motor starts up, top left light is solid green, then will not go further, the screen remains clear of any info or options except for faint grey dots. I have tried unplugging for a few hours, also turning off and on while holding up arrow or down arrow. Still nothing. Manual only suggest possible ROM or RAM issue. I wrote Graphtec and they suggested 
"If the screen is clear and the machine is on then it could either be a mainboard or an LCD issue." 

I have attached a photo. There are faint dots when turned on, so would that mean the LCD is OK?. Jobs spool and complete (I use signlab) on the PC running it. 

If anyone knows of this problem can help point me in direction or add insight I would be greatly appreciated. 

cutter.jpg

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