# Bad pixel in Unicron Hat HD

**URL:** <https://forums.pimoroni.com/t/bad-pixel-in-unicron-hat-hd/6018>\
**Category:** Support\
**Created:** [September 22, 2017, 2:52pm UTC](https://forums.pimoroni.com/t/bad-pixel-in-unicron-hat-hd/6018 "2017-09-22T14:52:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ddb](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/ddb/32/3190_2.png) [@ddb](https://forums.pimoroni.com/u/ddb)\
**Post date:** [September 22, 2017, 2:52pm UTC](https://forums.pimoroni.com/t/bad-pixel-in-unicron-hat-hd/6018/1 "2017-09-22T14:52:01Z")

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Just bought one of the new Unicorn Hat HD’s from Adafruit, and ran into a small problem – everything seems to work correctly with the exception of one pixel – the pixel at coordinate (5, 3) (assuming zero-based coordinates with origin at the upper left) seems to be defective as it cannot display any of the red channel of any particular color.

I have attached a picture of the Pi running the candle.py example script, you can easily see the green pixel in among the other flame-colored pixels.

What are my choices here?

![IMG_0540](https://us1.discourse-cdn.com/flex016/uploads/pimoroni/original/2X/6/600622a06f8e7280acc3c9f482580b7a6ec50fb0.jpg)

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**Author:** ![gadgetoid](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/gadgetoid/32/13_2.png) [@gadgetoid](https://forums.pimoroni.com/u/gadgetoid)\
**Post date:** [October 4, 2017, 10:10am UTC](https://forums.pimoroni.com/t/bad-pixel-in-unicron-hat-hd/6018/2 "2017-10-04T10:10:29Z")

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Yep! That’s a dud. Just drop us a line at [support@pimoroni.com](mailto:support@pimoroni.com) if you haven’t already, they’ll sort you out with a replacement.