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I connected the Left and Right audio outs and video out cables from the TV unit to the lower unit. These are required to provide TV and radio sound to the lower unit.
The only reason to connect the Left/ Right Front and Rears back to the top unit is if you intend to connect to speakers using the speaker wires instead of to an external amp. Otherwise, those RCAs connect directly to your amp. You'll see this listed in the installation instructions.
What sucks is that it was previously all working fine, with the exception of some alternator whine. I took it in to Best Buy (where I had the speakers installed) to check on that. The looked at it for about 20 minutes and then said they needed to set up another inspection appointment because it was going to take longer. I then noticed that they had swapped around the RCA cables on my amp and switched the amp into Mono mode. When I switched it all back, the Front left channel of the T3 no longer worked.
I just did a fresh install of Windows, hoping that it was just some driver issue. Still no luck. It looks like it really is a hardware issue. I may check with a PC repair shop can help.
I appreciate the help!
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