Model: Kitchen Aid ykerc507hw4

Heard a loud sound then noticed the two inside oven wall lights no longer worked. One of the lights did burn out and part of the bulbs' base was flaked off. The other light was fine when tested in another socket.

The rest of the oven features work fine.

I removed the back panel and put a voltmeter on the back side leads leading to the bulbs; no voltage detected.

Not sure if this could be a bad transformer or damaged control board or maybe even a damaged bulb base.

I placed some photos here: https://photos.app.goo.gl/9u5m8mCVH9s2BsPz6

I can also scan the wiring diagram if needed.

Any help is appreciated.