# pHAT BEAT LEDs only light 2 of 8

**URL:** <https://forums.pimoroni.com/t/phat-beat-leds-only-light-2-of-8/12233>\
**Category:** Support\
**Created:** [November 23, 2019, 3:55pm UTC](https://forums.pimoroni.com/t/phat-beat-leds-only-light-2-of-8/12233 "2019-11-23T15:55:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Col\_Hogan](https://avatars.discourse-cdn.com/v4/letter/c/839c29/32.png) [@Col\_Hogan](https://forums.pimoroni.com/u/Col_Hogan)\
**Post date:** [November 23, 2019, 3:55pm UTC](https://forums.pimoroni.com/t/phat-beat-leds-only-light-2-of-8/12233/1 "2019-11-23T15:55:47Z")

</div>

Hello,  
I just setup a new PI Zero W with the pHAT BEAT and a pair of Adafruit speakers. The speakers test fine (although there is a slight crackle when the audio starts).

The LEDs aren’t working though. When I do the example below, only two light up (the ones next to the 6 & 3). They all should light up Cyan, right?

```auto
for p in range(16):
    phatbeat.set_pixel(p, 0, 255, 255)

phatbeat.show()

```

Suggestions? I double checked my soldering (which I’m new at) and don’t see any really bad pins.

Thanks,  
Jeff

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**Author:** ![alphanumeric](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/alphanumeric/32/2729_2.png) [@alphanumeric](https://forums.pimoroni.com/u/alphanumeric)\
**Post date:** [November 23, 2019, 4:49pm UTC](https://forums.pimoroni.com/t/phat-beat-leds-only-light-2-of-8/12233/2 "2019-11-23T16:49:09Z")

</div>

The pinout is here

> **[pHAT BEAT at Raspberry Pi GPIO Pinout](https://pinout.xyz/pinout/phat_beat#)**
>
> Stereo I2S DAC, AMP and VU meter

  
I believe the LED’s are controlled via BCM 24 clock and BCM 23 Data. If it was a soldering issue I would think they wouldn’t work at all?  
The Python Function reference is here.  
[http://docs.pimoroni.com/phatbeat/](http://docs.pimoroni.com/phatbeat/)

`phatbeat.set_all( 255, 255, 255, 1.0)` should set all LED’s to full bright white, if I read it correctly.

What happens if you run the rainbow.py example?