LG TV model 42LN5700
In the on-screen input list, I set it for external speakers. Digital audio output from TV is connected to digital audio
input on a digital to analog converter.
Tuner is a Kenwood KR-A5040 (analog only, no digital input).
RCA cables are connected to the converter box and Video 2
input on the tuner. The tuner is set to Video 2, but there is no sound, and the
TV says it is getting "no signal." (I know the speakers are connected properly, because the radio
tuner plays fine through them.)
Any ideas what I might try next? The cables are connected exactly as they were when I had a TV with analog audio output. The only difference in this case is the digital-to-analog converter.

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