# Fan-Shim fan runs for a second or two, then stops (Pi4)

**URL:** <https://forums.pimoroni.com/t/fan-shim-fan-runs-for-a-second-or-two-then-stops-pi4/12028>\
**Category:** Support\
**Created:** [October 27, 2019, 9:02am UTC](https://forums.pimoroni.com/t/fan-shim-fan-runs-for-a-second-or-two-then-stops-pi4/12028 "2019-10-27T09:02:34Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![Raspberrytart](https://avatars.discourse-cdn.com/v4/letter/r/da6949/32.png) [@Raspberrytart](https://forums.pimoroni.com/u/Raspberrytart)\
**Post date:** [October 28, 2019, 8:31am UTC](https://forums.pimoroni.com/t/fan-shim-fan-runs-for-a-second-or-two-then-stops-pi4/12028/6 "2019-10-28T08:31:58Z")

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See. If the fan spins without the shim part attached. Run 5v directly to the fan. If it is spinning well you know the fan unit is ok. If not a faulty fan unit then it’s likely a connection between the shim and the gpio pins, it seems quite common below is a link from a thread of another example.

[![](https://us1.discourse-cdn.com/flex016/uploads/pimoroni/original/2X/3/3b7b723c394bf2f73175cd440a03d12f14607499.png "bartabas")](https://forums.pimoroni.com/u/bartabas)

[bartabas](https://forums.pimoroni.com/u/bartabas)

[4d](https://forums.pimoroni.com/t/fanshim-rpi4-does-not-react-from-python/12000/8)

Congratulations, you won! I have bending pin 12 slightly and it worked.  
Now I have to do some mechanic to establish the contact durably.

Many thanks!H

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