This video will show you how to replace the trigger buttons rl shoulder buttons. Im assuming of course that something is lose and not an actual ic problem.

How To Fix Nintendo Ds Lite D Pad Buttons Broken Unresponsive Easy
3ds right trigger not working. Already it has a defect. Nintendo 3ds buttons not working. You could try to blow on the indentations along the right and left side of your dsi system with force. So it sticks down when i press it down. If that doesnt work you can get a silicone spray that will lube the button and that might make it work but try not to get any on other surfaces. Does anyone know how the buttons are interfaced with pcb b4 i dig in.
Do so again on the top. This issue is likely caused by dust or other debris that may have gotten into the release trap and pressure sensitive button. So clearly people just happen to only abuse nintendo products not sony products. This feature is not available right now. Clean around the touch screen to ensure it is free of any debris or. The right trigger is sticky.
I just got my blue 3ds xl from ordering in the target deal of 40 off. My psp has never had any problems with l or r buttons. No post is better on these forums than it hasnt happened to me so clearly you must be using your 3ds as a hammer your post is crap. Im pretty profecient at soldering not speleling as you can tell. Be careful not to build static electricity near. Or is a contact.
My right trigger isnt workingprobably due to me dropping my ds numerous times in a drunken stupor. In that state it will not register the buttons youre pressing including the power button. Wd 40 might also work. If you are using a screen protector on the touch pad and multiple buttons are not responding remove the screen protector. It willvoid your warranty so if you are still covered i wouldnt recommend performing this. If you have no experience dissasembling electronic devices get some help to do it.
Please try again later. Just like mobile phones and computers the nintendo 3ds can occasionally lock up completely. Opening your 3ds can be tricky and it might break in the process. This is specifically dealing with dust in the shoulder buttons which is a common occurrence in the original 3ds as well as a few other nintendo systems.