I would not expect a "spare part" until dealer isolates the problem, that would be dumb. It could be a bad connector on the transformer plate or problem on power distribution board or even further in.

I suspect they will send your panel(s) back if they can't isolate it immediately. You really want to keep your same panels as everything is a matched pair and vintage.

They might have a spare transformer plate but they are not gonna have spare new back panels sitting around and sending you one on hunch.

- Fiddler (IMHO)

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