Recording Issue from AT&T Receiver to a DVD/VHS Combo Recorder

For years, I have been recording DVDs and VHS tapes to a Panasonic recorder (DMR-EZ48V) from an AT&T receiver. Then AT&T switched the receiver to wireless, and it stopped working. I could get audio but no video on both DVD and tape. Not thinking that AT&T would change it back, I switched electronics between rooms, and the recorder worked there with a wired receiver. As it happened, AT&T was here for another reason and agreed to switch the receiver back to wired. I then switched room setups again, but now the recorder is back to not recording video. I tried adding component cables--no difference. Got lots of phone support from AT&T, which verified my connections. AT&T thought it must be the recorder, but again, it worked in the other room on a much older, SD TV. It just wasn't a convenient place for me. I've checked the recorder manual for any possible setting slip up. It all seems right. I am using RCA cables, HDMI cables, and an S-video cable. I have tried simplifying the set up just in case there is interference (though it has worked for years with those), and it either makes no difference or makes it worse. I am able to play tapes and DVDs; I just cannot record video from the receiver any longer although the audio is fine. Note: The programs I am trying to record are not likely to be copyrighted. I don't think that's the issue. Plus, for years, when some program was copyrighted and I could not record to a DVD, I could still record to a tape. In only one case that I recall, would the tape not work either.

I haven't paid much attention to the other setup because all my needs have been fulfilled by the DVD/VHS recorder for so long, but given this malfunction, I wanted to see if could record to the VCR in the room with the SD TV. And no, I cannot. I can see tapes and play DVDs on the separate DVD player, but I cannot record tapes there either.

I hope I am providing all the necessary information. I sure hope someone has an idea. I have learned that these recorders are not being made any more, and it makes me wonder how people are making space on their DVRs without these. Surely there is still a demand.