I just unclogged and repaired a severely blocked kitchen sink drain. Upon arrival, I used a handheld auger to dislodge the clog deep in the drain pipe. When that failed, I deployed a motorized drain snake with a closed-core cable to power through the obstruction. After clearing the stoppage, I inspected the pipes with a borescope camera. Several pipe joints showed cracks, so I replaced those sections with new PVC piping and no-hub couplings. Finally, I snaked the drain again to ensure proper flow before departing.