I am not sure what model I have but it is Curtis 27" not a flat screen. It will not let me watch the Tv through the vcr even when I put it on Av1. My vcr is fine because it even records ok. Did work when I 1st got the thing like a month ago I want to be able to watch & change channels through my vcr/dvd player. It just stopped working?? Help please.

Televison & Video - Curtis - CM27002S 27" TV