Left Joycon Rail Not Recognized

I’ve been reading through posts on here and other places all day but can’t seem to find much information on the problem I’m having. I apologize if I’ve just missed it somewhere. Hoping someone might be able to point me in the right direction.

I bought another console on eBay in hopes it would be a fairly easy fix. The seller said that the left joycon rail didn’t work and you can’t get past the initial setup screen. I’ve replaced with known working rails from other units, and tried several different joycons, but nothing seems to work. The right joycon connects no problem, and the fan does seem to be working (I read that they are linked). Several people on reddit mentioned initializing the console, but that doesn’t work either.

The connector looks fine. I’ve tested for shorts and compared that to a working unit and can’t seem to find any. Could it still be associated with the fan even though that’s working?

Any help would be greatly appreciated :slight_smile:

I replaced the PU chip on the back from a donor board…no change :roll_eyes:

Any other ideas?