Josh K West Salem , WI April 12, 2020 Appliance: LG Dishwasher LDS4821ST Lg Dishwasher Lds4821st: Electrical filter burnt in dishwasher. How to replace Dishwasher Dishrack Roller And Axle. Lg lds4821ST dishwasher stopped working and had a burnt electronics/ fireworks smell. Main board looked good. Voltage only measured 70 volts at board instead of 120. Pulled out the dishwasher and saw that the electrical filter was badly burnt. I was surprised how bad it melted around the fuse. Ordered one here it arrived in 2 days and dishwasher was up in running again. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes