# Y-axis endstop not working

**URL:** <https://forum.lulzbot.com/t/y-axis-endstop-not-working/4793>\
**Category:** LulzBot Mini\
**Created:** [April 11, 2017, 1:26pm UTC](https://forum.lulzbot.com/t/y-axis-endstop-not-working/4793 "2017-04-11T13:26:36Z")\
**Posts on this page:** 1\
**Showing post:** 4

<div class="post-metadata">

**Author:** ![mrvanes](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/mrvanes/32/103_2.png) [@mrvanes](https://forum.lulzbot.com/u/mrvanes)\
**Post date:** [May 8, 2017, 2:18pm UTC](https://forum.lulzbot.com/t/y-axis-endstop-not-working/4793/4 "2017-05-08T14:18:39Z")

</div>

I blew up the exact same Y sensor while doing maintenance on the nozzle (and fixed it by replacing the RAMBo). I think the heater resistor insulation together with the thermistor hold plate is a bad design choice of AO. I hate to repeat myself, but nevertheless feel obliged to mention my solution.

 ![IMG_20170425_214857.jpg](https://us1.discourse-cdn.com/flex020/uploads/lulzbot/original/2X/0/06ce434d80400607d03bf0b0c9f11daf11d51ea4.jpeg)  
I got rid of the lower part of the thermistor hold plate and made sure the heater resistor leads are completely isolated from the hot-end by covering the bare leads in exhaust repair cement.  
And yeah, I know general advice is to shut down the printer on hot-end maintenance and never touch it with conductive brushes. It’s just too easy to short the heater resistor wires IMHO.

---

_[View the full topic](https://forum.lulzbot.com/t/y-axis-endstop-not-working/4793)._