Hello all,
Thought I'd share an update with the forum – happy to report that, like others, I've successfully fixed the Immersun 'Error 9' issue by replacing the T1 transformer. Huge thanks to everyone, and in particular to Stevews for the detailed guidance shared here and in PM.
This is the transformer I bought:
https://store.open-electronics.org/volt ... -SVL101201
That's €8 at the time of writing, and they charged €21.76 for delivery to the UK (Northern Ireland). Once ordered, it arrived very quickly. I'm not handy with electronics, so a helpful neighbour stepped in to make the replacement.
One point to note is that all settings were lost in the process, including savings history. Worth taking note of it all before starting work on the unit.
For anyone being quoted £199 by Immersun to even look at the device (and no money back if not fixed), this is absolutely worth trying!