Hi All,
a curious one: When I over clock the cpu the internal LED’s work fine but the OLED and the case fans refuse to function. FYI I have modded this so that it is watercooled.
Any ideas?
many thanks
What kind of overclocking have you made? Do you have an original power supply?
After canceling the overclocking settings, will all functions of the case work normally? What are your overclocking parameters? Please provide detailed information so we can reproduce and verify the issue.
What specifications does the power adapter you are currently using have? We recommend using the official 27W power adapter from PI5, or a third-party 5V 5A power supply.
Hi,
Answers:
- When cancelling the overclocking it functions normally.
- My overclocking parameters are:
over_voltage_delta=50000
arm_freq=3000
gpu_freq=1000 - Power Supply is the official Raspberry Pi 5 power supply.
- Other possibly relevant details:
A: OS is ubuntu
B: This is using the 52 pi water cooling system for the Raspberry Pi
C: This is the 16gb version
D: Single SSD 256Gb
Would you like me to see what happens if I do the same on Rasperby Pi OS?
Thanks for the support!
It is very likely that the power supply system is overloaded. While the official 27W power supply for the Raspberry Pi 5 (5.1V/5.3A) can cover default conditions, your overclocking parameters represent a very high intensity:
CPU overclocked from the default 1.5GHz to 3GHz (power consumption increases by about 2-3 times, with a maximum load power of 15-18W);
GPU overclocked from the default 500MHz to 1GHz (power consumption increases by about 1.5 times, with a maximum load power of about 5-7W);
The cooling fan (powered by the Raspberry Pi, about 2-3W) and a 256GB SSD (about 1-2W) bring the total power consumption close to or exceeding the 27W power supply limit.
Ubuntu’s adaptation to the Raspberry Pi hardware for “overclocking states” is weaker than that of the official Raspberry Pi OS, which may lead to the control script detecting “abnormal CPU frequency” and getting stuck, or the drivers failing to initialize peripherals under high core loads.
The fan control logic depends on the “CPU temperature threshold.” After overclocking, the CPU temperature may rise sharply (even with water cooling, the VRM temperature may still be too high), potentially triggering script exception protection, mistakenly identifying it as a hardware failure, and stopping the fan.
You might try installing the Raspberry Pi Bookworm system with your overclocking data unchanged to see how it performs.
Finally, we recommend reducing the overclocking extent to find a “balance point between stability and performance.”
Conservative test parameters 1:
arm_freq=2600
gpu_freq=800
over_voltage_delta=30000 (30mV)
Conservative test parameters 2:
arm_freq=2800
gpu_freq=900
over_voltage_delta=40000 (40mV)
Alternatively, modify to even lower overclocking data and check the results.
Hi, firstly thankyou so much for the great reply! I also believe it’s a power issue, there’s nothing in the logs to suggest temp related etc.. What I have done is create a simple script that changes the boot config parameters so that I can select between normal and overclocked configuration (it needs to reboot when switching configs). In general use I don’t need it overclocked so this works really well.
Again, thanyou so much for the great reply!!
Hi, thanks for sending me to that link, I posted below more details. I am now looking at how I can add additional PWM power/functionality to the case but there’s already a lot of stuff in there 
You may also want to take a look at Jeff Geerlings article just search for overclocking and underclocking the raspberry pi and jeff geerling.
Thanks for this, however the pironman service allows me to control the case fans via the I/O board when running in a non overclocked configuration (as above it doesn’t work correctly when overclocked) The Issue is with overclocking and most likely a power issue due to increased power requirements when overclocked, so I am exploring options to power the pwm fans separately, the pironman 5 max I/O expander provides two fan connectors both of which are taken up by the two case fans. Because I have watercooled mine the CPU fan connector next to the USB ports is currently free. This is my first watercooled raspberry pi, so I am also looking at the right/compatible components to create a 180 degree bend so the water cooling unit can sit behind the raspberry pi.
I’ve put a 120mm USB PC fan on the side, CPU temp reach 40 at full load clocked at 2900mhz. 
with watercooling mine is at 24 deg at 3000mhz it is fun. I am just trying to find the right connectors to make a 180 degree bend outside the case so the cooling system can fit at the back.
also my email is renyk@systems-engineer.info if you want to PM me can’t see how to do it on the forum seems like you have to be granted that permission?