I'll assume you have a Goldstar MV-1502 since that's the category you posted under.
If not, LG manuals are
here and you can find links to helpful exploded view diagrams and part ordering help
here.
I recommend that you bookmark those link to your favorites.
The MV1502 owner's manual is
here. Do install the Korean fonts, otherwise it will not show up!
On page 26 it covers the procedure for changing both the cooktop lamps and the oven light.
If you've installed new lamps, but they still won't come on or won't go off, then a short has damaged the control circuit board.
But it can be
repaired.
We're happy to help you with free advice and we'd appreciate your
thoughtful rating of our answer.
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