Modded Switch oled battery 0% and cpu temperature 0°c

[Darkdialga6]

Hello, can somebody help me please? On my fresh modded switch oled, all fuel gauge ic values are 0 and cpu temp shows also 0.

I have already checked for a missing component and damaged traces but could not find anything. Does it only need a max17050 replacement? The console currently can not boot into hos, it can only boot hekate.

 

[jkyoho]

Hacking  Thread 'Fresh installed HWFLY OLED. Hekate show Battery 0%, 0 amp current'

Oct 18, 2023

I've installed picofly on a new working OLED.

I was very careful to protect every solder point to prevent shorts etc.

After installation, I was so surprised to find that although I can boot into hekate but it shows the battery is 0% and 0 amp current.

I suspected max 17050 is dead and did two replacements with no luck to recover. (not sure the new chip is ok or not).

The strange thing is why the installation can cause 17050 dead? so strange. anyone had the same issue?


in hekate, it shows like something below:

• jjloki222
• Replies: 12
• Forum: Nintendo Switch

check this post if any help

 

[Darkdialga6]

Ok, thank you for sharing this but the problem is that i couldn't see any damaged traces around the cpu and i find it also weird that the cpu temperature shows also 0. I also tried to reflow the cpu two times but it didn't change anything. Now i am unsure if i can fix this switch oled console. The issue is so weird.

 

[404aCe-AL58]

Ok, thank you for sharing this but the problem is that i couldn't see any damaged traces around the cpu and i find it also weird that the cpu temperature shows also 0. I also tried to reflow the cpu two times but it didn't change anything. Now i am unsure if i can fix this switch oled console. The issue is so weird.

Ok, thank you for sharing this but the problem is that i couldn't see any damaged traces around the cpu and i find it also weird that the cpu temperature shows also 0. I also tried to reflow the cpu two times but it didn't change anything. Now i am unsure if i can fix this switch oled console. The issue is so weird.

 

[thesjaakspoiler]

Ok, thank you for sharing this but the problem is that i couldn't see any damaged traces around the cpu and i find it also weird that the cpu temperature shows also 0.

The CPU communicates with the battery management IC and that is where it gets the battery statistics and temperature reading from. This works with a simple I2C connection.
If that communication line is interrupted or if one of the two pull-up resistors are missing or broken, then you will see all statistics as zero.

Things that can go wrong :
- damaged trace
- damaged resistors (they migth look fine but hey should measure 1K)
- bridged resistors when installing the picofly.

If you got this OLED with this error and it has an picofly in it, take a look at where the SDA/SCL wires are soldered on the backside :

I presume that these are the pull up resistors but with other models they are close the the shield of the APU (and sometimes knocked off the board when removing the shield).

You said you reflowed the APU.
I assume that you know what you're doing but theoretically the connection between the APU and those 2 I2C signals could also be broken. But just like replacing this chip, I would not consider that to be the cause.

Since the Switch is working, I would assume that the APU and battery IC is fine.

 

[Darkdialga6]

Ok, thank you for the useful information. I have installed the picofly myself into the switch oled console. And i did not have soldered wires for Sda/Scl. I have also looked at the sda/scl resistors and they seems to be fine and have no bridges of course! I have also measured the sda/scl resistors in ohm mode and they give a value about .980k ohm. As i have said in my post above, i have also looked for damaged traces but could not find anything. I think the cpu itself might be dead because in hekate the cpu temperature also reads zero or there is a broken connection under the cpu. I will forget this switch oled console. This console is not important anymore.

I have already got another switch oled console and installed the picofly and this one does not have this issue. All is working now.

 

[Aymenmoham]

Same problem, Two days of inspection, Turns out to be two cpu traces, thanks god, night this helpful for u

 

[Darkdialga6]

Same problem, Two days of inspection, Turns out to be two cpu traces, thanks god, night this helpful for u

I just forgot this mainboard because i can't fix it. I can't see any damaged traces.

The one seller from germany sold me this motherboard as defective but had listed it as 'working' and 'used'. He did not want to take the motherboard back or give me a refund. I won't buy from this seller again in the future because that is not acceptable.

Btw I modded another switch oled motherboard with a picofly oled chip and a dat0 adapter (i did not tin the dat0 adapter and i reflowed the emmc at last) and this motherboard is 100% working. and it has no dat0 issues. It never has dat0 issues. It is perfect.