@dc42 Thank you very much for your help on this issue 
Posts made by KB87
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RE: Duet Differential height sensor LED doesn't lightposted in IR Height Sensor
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RE: Duet Differential height sensor LED doesn't lightposted in IR Height Sensor
@dc42 Looks like the plastic top of the LED is damaged.
The image is a bit blurry but you can see part of the white missing at the top.
E3D are saying the unit will need to be returned with recorded postage so you can review the board. Is this still the case? With the current situation with COVID-19 I dont know when I will be able to get to a post office to send it back.
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Duet Differential height sensor LED doesn't lightposted in IR Height Sensor
Hi,
After some help. I have just fitted the Differential height sensor to my Anet A8 Printer. The mother board has been upgraded to a MKS Gen v1.4. I have connected the sensor up as per the instruction in here: https://miscsolutions.wordpress.com/mini-height-sensor-board/
The sensor works fine and detects the bed, but the LED light does not work at all. Not when the printer powers up or when the the bed is detected. I know it does not effect the function of the sensor, but it is handy to know when the senor is detecting.
I purchased the sensor from e3d & they have told me to ask for help on here to see if it is a simple fault before they go down the warranty route.
Thanks, Kevin.