Stephen W Danville , CA September 29, 2019 Appliance: Electrolux Microwave Hood Combo EI30MH55GSB Electrolux Microwave Ei30mh55gsb: LED light got so dim it couldn't be seen. How to replace Control Board (Main Electronic Control). Replaced the power module after determining the part number online. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes