Pulled the head unit back out to try and re-seat all the connections. Found a pinched wire with torn insulation that may have been shorting against the frame. "Aha, that must be why the new screen won't turn on!" Taped it up, cleaned every connection with Deoxit, and reassembled.

Nope. Still blank.

Maybe when I get back from tomorrow's road trip next week I'll put the old one back in to see if I fried the new one. Hope not... The very first time I powered it up after the initial screen replacement it briefly flashed, but that was it.

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