What happened to 105.3?????

We are in central Houston and discovered 105.3 FM a couple months ago and it quickly became one of our favorite radio stations. It would play seemingly endless and commercial free pop music and played old pop hits as well rather than just the top 7 like alot of other pop stations. Then about 3 weeks ago it suddenly went silent aside from an automated voice reading numbers then fully silent for a bit and now it only plays Spanish music. Does anyone know what happened? Did they move to a different channel?