I have an endstop cable (X-axis) that started having issues. It looks like the cable was broken inside the "sock", which was about 70 cut itself. This was right where the zip-tie was connecting this to the X-motor cable. Made way too tight.
Written to eBay seller for a new cable. These sleeved cables are hard to find. Demand €10 for this problem. Soldered for now. Ordered replacement switches with cables.
Surely somebody need to be told the zip-ties should not be this tight.
Broken cable
Re: Broken cable
Yeah,the zip-ties should not be too tight.Could you show some details about the zip-ties?
-Keep your mind and try to test it. 
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-Everything will be fun！-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!