# What the heck happened? (P5 acting up after a fraction of a second power failure)

**URL:** <https://forum.psaudio.com/t/what-the-heck-happened-p5-acting-up-after-a-fraction-of-a-second-power-failure/6856>\
**Category:** Power Components\
**Created:** [August 23, 2018, 2:02am UTC](https://forum.psaudio.com/t/what-the-heck-happened-p5-acting-up-after-a-fraction-of-a-second-power-failure/6856 "2018-08-23T02:02:23Z")\
**Posts on this page:** 4\
**Page:** 2

<div class="post-metadata">

**Author:** ![jamesh](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/jamesh/32/3871_2.png) [@jamesh](https://forum.psaudio.com/u/jamesh)\
**Post date:** [July 16, 2019, 5:18pm UTC](https://forum.psaudio.com/t/what-the-heck-happened-p5-acting-up-after-a-fraction-of-a-second-power-failure/6856/21 "2019-07-16T17:18:59Z")

</div>

Yes, for piece of mind, there is circuity in the P5 to never allow the output of dangerous power to plugged in gear.

---

<div class="post-metadata">

**Author:** ![tony22](https://avatars.discourse-cdn.com/v4/letter/t/f04885/32.png) [@tony22](https://forum.psaudio.com/u/tony22)\
**Post date:** [July 16, 2019, 6:36pm UTC](https://forum.psaudio.com/t/what-the-heck-happened-p5-acting-up-after-a-fraction-of-a-second-power-failure/6856/22 "2019-07-16T18:36:21Z")

</div>

Thanks! Same for the P15 and P20?

---

<div class="post-metadata">

**Author:** ![jamesh](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/jamesh/32/3871_2.png) [@jamesh](https://forum.psaudio.com/u/jamesh)\
**Post date:** [July 16, 2019, 7:07pm UTC](https://forum.psaudio.com/t/what-the-heck-happened-p5-acting-up-after-a-fraction-of-a-second-power-failure/6856/23 "2019-07-16T19:07:40Z")

</div>

Yes, absolutely! 🙂

---

<div class="post-metadata">

**Author:** ![zachteich](https://avatars.discourse-cdn.com/v4/letter/z/d2c977/32.png) [@zachteich](https://forum.psaudio.com/u/zachteich)\
**Post date:** [July 16, 2019, 8:28pm UTC](https://forum.psaudio.com/t/what-the-heck-happened-p5-acting-up-after-a-fraction-of-a-second-power-failure/6856/24 "2019-07-16T20:28:06Z")

</div>

Jamesh, many thanks! Glad to know it’s just a bit of confusion caused by the power interruption. My first incident may have triggered the P5 circuitry to which you referred, since I had no power flowing to components even though the P5 was fully on and the display functioning. The latter two didn’t, however, as I had power downstream even though the THD on the output exceeded 6% (presumably something that wouldn’t harm downstream equipment). Again, thanks.

[Previous page](https://forum.psaudio.com/t/what-the-heck-happened-p5-acting-up-after-a-fraction-of-a-second-power-failure/6856.md?page=1)