We have inspected your 3DS unit. There are problems with the motherboard electronics in the system. This delicate repair requires the disassembly of the console in addition to component level repairs to the electronics on the motherboard to repair the button electronics and membrane replacement. The unit was previously tampered with and the R button cable is damaged as well which needs total replacement. The cost for replacing the parts, repair, cleaning the unit, full correct reassembly, labor, with free return shipping is $86.95. That includes a 90 day warranty on the parts and repair. As an alternative we can simply return back your unit to you and the inspection fee, full reassembly, and return shipping is $36.95. Please make payment below to proceed.