This seems to happen when I put my New 3DS, The small one, in sleep mode. Then I open it and the homemenu starts going haywire!? My 3DS is hacked with luma cfw. But it didn't do this until recently.


That looks like hardware issue. The joystick is somehow geting stuck I gues.

Probably just some dust stuck between the shell and the screen.i had a similair problem with my O3ds, after one month of having it the touch screen was detecting touch all the time in the upper left corner :C
This seems to happen when I put my New 3DS, The small one, in sleep mode. Then I open it and the homemenu starts going haywire!? My 3DS is hacked with luma cfw. But it didn't do this until recently.

it was a brand new console, send it to warranty they replaced the whole screen and said it was an electrical problemProbably just some dust stuck between the shell and the screen.
Did you mean that the replaced 3ds is a refurbished system?This could very well be a recipe for a new disaster. It'd be much better if you could just find a new system.It was a refurbished system!
It was a secondhand unit that is inspected, cleaned, checked for defects and/or repaired. Since we are not aware on how the previous owner treated the console, hidden defects may arise. I agree with you here.Did you mean that the replaced 3ds is a refurbished system?This could very well be a recipe for a new disaster. It'd be much better if you could just find a new system.
There is a very high probability that This is a hardware failure. And it points out to either the Circle Pad or D-pad. The sound produced usually came from using your circlepad or dpad in selecting a title in your screen. Since Circle pads are more prone to damage due to its mechanism, i suspect it was a rogue circle pad with loose mechanism that is why it goes wild circling around like that. The shoulder button ZL or ZR usually brings the cursor to the far left or far right and produces a higher pitched sound than the one you currently have. So you could have a go and check on your Circle Pad in a local repair shop near you or you could do it yourself if you have a knowledge in opening a console. Just order a replacement part in ebay. The circle pad is connected tp the mother board through a ribbon and could be easily replaced by just unscrewing and unmounting the part.It was a refurbished system!