Hacking Hardware Misc Interference

[topillo90]

Hello all
Could this make an "interference on the screen"
I installed Pico and looks like I fucked up because I cut a line near the processor shell but I got "no SD card" despite I saw some interference in the screen, and after it got blue screen, I send to technician and he "fix" but when I was to pick up he said blue screen appear again when he was installing games, now it still loads the "no SD screen" but it's stuck and when I inserted a SD it doesn't do anything.
So I decided to revise and I was removing flex and found this.
Another weird was when I got the failure at beginning, I hear a little "buzz" I thought it was the processor but now I'm thinking maybe I damage that ic since beginning.
Thanks for reading and for your help, I've reading a lot into this post and I improved a lot, I have now successfully modded a lite and it runs fine.

 

[thesjaakspoiler]

Thanks for sharing the details and pictures!
Although it looks like you chipped of some of the housing of that component,
you never know what the damage inside the component is.
There was someone who just chipped a little tiny piece of the corner of his emmc and
the thing was completely dead.

 

[topillo90]

Thanks for sharing the details and pictures!
Although it looks like you chipped of some of the housing of that component,
you never know what the damage inside the component is.
There was someone who just chipped a little tiny piece of the corner of his emmc and
the thing was completely dead.

Yeah we never know, but the question was more about the function for that component

 

[jkyoho]

MAX77801 generates 3.3v standby from power on

 

[CMDreamer]

That's a voltage regulator and most likely related to the failure on the SD card slot.

Check its datasheet for the pinout and if you're skilled enough try injecting the required voltage into the SD card slot so to check if that's the issue.

Or even better, replace that IC.