# Four year old PC 2.0 failing

**URL:** <https://community.anovaculinary.com/t/four-year-old-pc-2-0-failing/35941>\
**Category:** Anova Precision® Cooker\
**Created:** [September 20, 2026, 8:14pm UTC](https://community.anovaculinary.com/t/four-year-old-pc-2-0-failing/35941 "2026-09-20T20:14:24Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Douglas](https://sea2.discourse-cdn.com/flex016/user_avatar/community.anovaculinary.com/douglas/32/7533_2.png) [@Douglas](https://community.anovaculinary.com/u/Douglas)\
**Post date:** [September 20, 2026, 8:14pm UTC](https://community.anovaculinary.com/t/four-year-old-pc-2-0-failing/35941/1 "2026-09-20T20:14:24Z")

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Recently while making another batch of yogurt my PC screeched its complaint. After investigating and fiddling a bit, I decided that it happens only at high temperature. I pasteurize whole milk at 185ºF for three hours. A temporary fix was to remove the shield. I ferment the yogurt at 110ºF for eight or more hours as convenient. At this low temperature it has not screeched.

I just started fermenting another batch. Before this stem I dripped silicone oil down the impeller shaft and the little bearing(?) instantly felt better. It’s been about an hour now and all is quiet on the yogurt front.

I suspect the longevity of my PC due to ALWAYS having a cover on the bath keeping the high temperature and humidity away from the control head.