Hacking Fix a failed SX Lite mod on Nintendo Switch Lite

SnoopDoge

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Hi all,

So I recently ordered my own SX Lite. After inspecting the package and doing my own research, I found it too risky to install SX Lite on my own Switch Lite. I'm fairly experienced with SMD rework stuff, but I found the SX Lite kit a little bit fragile. You already have small pads on the PCB to attach the kit by soldering (especially the NAND area), and I did not feel comfortable to do this mod on my "daily driver". I also have a lot e-store games and want to use the SX Lite for homebrew (emulation). So I was thinking a second Switch Lite would be best for me, to experiment with SX Lite and to prevent losing my legal games.

I stumbled upon a non-working Switch Lite for almost free, so I took the chance and bought it. Ironically, it was a non-working Switch Lite due to a botched SX Lite mod attempt. It was a mess. Bridged connections, missing components, soldering heat damage at the right speaker. After a big IPA cleanup and removing the botched SX Lite mod, I ended with a semi working Switch: everything is working, except for the screen and possibly the SD card reader. I have sound, the backlight is working, but there's no image.

  • There's no visible damage at the LCD flex cable (near NAND area).
  • I cleaned up every short and bridge at the affected area's. Also checked if components where missing (like resistors and capacitors).
  • The SP1 and SP2 caps are missing from the Switch Lite, SP1 is still attached to the SX Lite PCB and SP2 was never there, The original owner probably lost that cap during installation.
  • The SP2 pad area is slightly damaged (probably too hot), but i can still pre-tin a bit of that area.
  • There was a big blob of solder covering two capacitors where you solder the SX Lite kit to the SD card reader. I removed this blob, probably with the two capacitors in it.
So I was wondering if my diagnosis makes sense. The only missing components are SP1 and SP2 and the two capacitors near the SD card soldering area. Does a missing SP1 and SP2 cap results in a black screen? If yes, does anyone has the specifications for the replacement of those 4 missing components?

It would be nice if I can revive this this Switch for almost nothing. Thank you!
 
Last edited by SnoopDoge,

izy

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the sp1 and sp2 dont affect screen and neither do 0401 (the big sd cap) and whatever the small one is

basically hes shorted display output with a botched install
 

SnoopDoge

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the sp1 and sp2 dont affect screen and neither do 0401 (the big sd cap) and whatever the small one is

basically hes shorted display output with a botched install

Do you know if such short damages the display module itself or the SOC? Replacement screens aren't that expensive so I'm willing to try. I could also swap displays between this broken switch and my own Switch to test the display. But I would be awesome if someone could confirm so I can avoid opening my Switch and / or making a useless purchase.

Also, do you know the capacitance of that 0401 cap? I'm assuming its to minimize inrush current so it would theoretically still work without the cap. Otherwise I'm guessing something like 10 uF would do the trick.
 

MaxiBus

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Hey,
i have a dead switch lite too, sx lite install went wrong, now the display is dead.
Did you ever tried to replace the lcd?

My issue is this one:
AK5PJGD.png


Weird thing is, i have no sound too.
 
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