Hardware Weird fan/sleep mode behavior

[luizsaluti]

I am trying to troubleshoot my RP2040 Picofly modded V1 regarding abnormal battery usage while in sleep mode.

I have tried a lot of settings (sleep/notification/auto updates), atmosphere/config/system_settings.ini and airplane mode combinations possible.

One behavior that is bugging me a lot is whenever I plug in joycons (third and first party), the fans start ramping up and stopping every second.
It happens on OFW/CFW. Maybe an IC chip is damaged? I am pretty sure this has to be related to my Switch draining its battery overnight without doing anything (you can feel a super slight bump in temperature in the right side of screen/back.

Also, it is also hot to touch when 100% docked and sleeping too.

 

[thesjaakspoiler]

If I recall past topic, it usually was a software related thing.
Updating to the latest firmware and Hekate/Atmosphere sometimes helps.
But sometimes it seems to be some settings :

Misc  Thread 'Battery drain on banned switch'

Dec 8, 2025

Hello everyone, I'm new to this forum but I've used it already even before registering for many information.
I searched everywhere, but I couldn't find a solution.
I currently how 3 Switch (V1,V2, OLED)
The V2 is modded.
The OLED is modded and banned.
The V1 banned and not modded.
What I noticed is that my banned consoles drains a lot of battery in standby when connected to a wifi.
Airplane modes works to keep the battery safe, but sometimes I forget to enable it.
I was wondering if someone had a solution, an homebrew that blocks whatever is trying to talk to in the standby or anything...

• Gioxers
• Replies: 2
• Forum: Nintendo Switch

 

[luizsaluti]

If I recall past topic, it usually was a software related thing.
Updating to the latest firmware and Hekate/Atmosphere sometimes helps.
But sometimes it seems to be some settings :

Misc  Thread 'Battery drain on banned switch'

Dec 8, 2025

Hello everyone, I'm new to this forum but I've used it already even before registering for many information.
I searched everywhere, but I couldn't find a solution.
I currently how 3 Switch (V1,V2, OLED)
The V2 is modded.
The OLED is modded and banned.
The V1 banned and not modded.
What I noticed is that my banned consoles drains a lot of battery in standby when connected to a wifi.
Airplane modes works to keep the battery safe, but sometimes I forget to enable it.
I was wondering if someone had a solution, an homebrew that blocks whatever is trying to talk to in the standby or anything...

• Gioxers
• Replies: 2
• Forum: Nintendo Switch

Yeah, I have already tried patching that file. Tried the full command list too. But I don't see that specific symptom anywhere on the internet. Even if I put it in flight mode it still drains battery like crazy. It also lights up my third party rgb joycons.

If I take the joycons off the fan revving stops, but the temperature and drain still occur.