Facing TV Problems? Ask a TV Technician.
Hi and welcome to the site, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.
Initially, what other devices are (to be) connected to both the Toshiba and the denon?
And the Sony is connected directly to the Toshiba? ...or to the Denon? ...using what kind of cable(s) please?
Unfortunately, the Denon AVR-1513 would only work directly with an HDMI capable TV.
There is a hopeful workaround with the use of an add-on device. However, the video quality would only be SD (standard) not HD since the TV is only capable of HD (high definition).
Would this add-on / workaround serve your need please?
Sorry, that would be "...TV is not capable of HD..."
Still, please click HERE. The idea is to connect the Denon's HDMI OUT MONITOR to this converter device and connect this device's VIDEO OUTPUT to the Toshiba's VIDEO-1 or VIDEO-2 yellow jacks.
You may have to experiment with the Sony's OUTPUT RESOLUTION settings for optimum results.
The workaround would use an add-on device. Please click HERE.