Hmm, okay - pretty sure something got short-circuited . . . and it arced
(not arched). Regardless, troubleshooting this (at least initially) is pretty easy. When you cycle the light button through the three stages (Off, Hi, Lo) - do you hear the audible sound at each stage, and does the lighting stage show up on the digital display (most microwaves have this to help you know "where you are")? If you hear all three audible cues, then I'll concede, I'm not sure what's wrong. However, if you now only hear two audible cues, it sound like one of those stages probably did get damaged when the power arced. If you really, really
want the bright light, it's probably a case of having to replace the power control board (PCB). Not sure how much those would be, or what model # board it would be, but cross-referencing it - isn't too much trouble. Additionally, you may be able to just pull off (unscrew
, and pull off) the numeric membrane panel, and look at the PCB - and see the model number. It'll be up to you to decide how much you need that light, and whether $40-50 is worth it to you. Still probably less than buying (and installing a new microwave, which for over range-type installation isn't a whole lot of fun . . .).