# Particle Boron New Haven OLED Display Issue

**URL:** <https://community.particle.io/t/particle-boron-new-haven-oled-display-issue/48318>\
**Category:** Firmware\
**Created:** [March 9, 2019, 2:59am UTC](https://community.particle.io/t/particle-boron-new-haven-oled-display-issue/48318 "2019-03-09T02:59:12Z")\
**Posts on this page:** 1\
**Showing post:** 21

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**Author:** ![picsil](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/picsil/32/21737_2.png) [@picsil](https://community.particle.io/u/picsil)\
**Post date:** [May 16, 2019, 6:37pm UTC](https://community.particle.io/t/particle-boron-new-haven-oled-display-issue/48318/21 "2019-05-16T18:37:15Z")

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Making some progress in identifying it. So far I’ve been able to tell that the SOS is caused by a NULL pointer reference. There’s a function pointer (cb) kept in the u8g2 struct that gets overwritten by ClearDisplay() causing it to be set to NULL. Still digging further.

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