Do NOT use the HA yellow kit screws on a CM5 module

Installation
22

thanks bobby for raising this. I think it saved me from damaging it because I googled it here bevor I tightened the screw because it felt odd.

To solve it does anyone knows where to order the right installation kit with smaller sized screws and the right heat pads

1 Like
23

Just replace the ā€œstockā€ NC heatsink with a Raspberry Pi Foundation CM5 heatsink (they are cheap) as linked in the post directly above.

The RPi kit comes with all hardware, and ā€œjust worksā€ (the CM standard included PCB holes for mounting so the later CM5 heatsink fits).

24

@Auvrae did you succeed with this?

25

Iā€™m glad I was able to prevent the damage in your case. Sadly most folks come here after itā€™s broken.

26

I got the part and installed it, but itā€™s still not booting up. Iā€™m guessing the PMIC is dead. No blinky lights.

27

I found an excellent heatsink solution:

https://www.aliexpress.us/item/3256808307953500.html?spm=a2g0o.order_list.order_list_main.17.4bfc1802SUlBva&gatewayAdapt=glo2usa

This heatisink fits perfectly inside the HA Yellow enclosure, comes with the correct size screws to screw down into the threaded inserts on the HA Yellow PCB, includes the correct thickness thermal pads and even the slight compression to get them a good thermal interface. So now only does it secure the heatsink to the PCB better but it also secures the CM5 to the HA Yellow with all 4 screws and since itā€™s made for the CM5, no damaged components anymore.

Idle temps about 12F cooler, and when compiling ESP home I was seeing peaks of 170F and now itā€™s peaking at 154F

cm5 heatsink
cm5 heatsink690Ɨ919 241 KB

1 Like
28

Does anyone know exactly what this SMD component in the picture is? I broke mine too, but itā€™s so badly damaged that the component canā€™t be soldered back on. Now I need to find a replacement :confused:
I found this thread for a Raspberry Pi 5, but I measured the component and it has different dimensions than the recommended component.

29

Yep, itā€™s listed right here in this thread.

Replacement didnā€™t work for the poster, though itā€™s possibly other issues rather than a wrong part.

1 Like
30

Thanks!
I could not find the original part number, but based on the specifications listed in the thread about the Pi 5, I selected the following part from DigiKey: LPWI201208HR47T.
I just received the part, soldered it in, and can confirm that the CM5 is working again. :slight_smile:

1 Like
31

Thank goodness for posts like these, for those that see them in time not to break anything. Unfortunately, I am seeing this now, and already broke my yellow and CM5 about a year ago, probably just as this post was forming. Welp, at least I bought two, I guess.

1 Like