Look directly into the HDMI port and look to see if any pins are bent if they are you need and new HDMI port that requires soldering if they aren’t bent try a different cable if still nothing try a different port on the TV
What do I do about the adhesive on the SD slot? I don't want it to be too loose. Also I haven't done this yet but I plan to if I do this will I be able to still have all my data? I know it sounds like a stupid question but slight concern my 3DS works okay besides the fact that the charger port is broken
Rember to transfer the model number sticker to the new cover
If not if this works try this guide Nintendo 3DS SD Board Replacement
What do I do about the adhesive on the SD slot? I don't want it to be too loose. Also I haven't done this yet but I plan to if I do this will I be able to still have all my data? I know it sounds like a stupid question but slight concern my 3DS works okay besides the fact that the charger port is broken