I have an H23/600 receiver. The HDMI output feeds an LCD TV and I also have RCA outputs V1/R1/L1 feeding an RF modulator that feeds an old CRT TV. Recently, V1/R1/L1 have started shutting off when the HDMI TV is off. I looked for an "HDMI Control" option on but there isn't one for this receiver. How do I keep V1/R1/L1 on with the HDMI TV off?? Is there a setting I'm missing or is there a problem with the receiver?