Hi Eric, thanks very much for the reply.
I don't actually follow, but thank you for explaining what may be involved.
I opened the borrowed unit that I have, but to be honest, I have no idea what what a "primary winding" looks like, or a transformer. (You probably just sighed to yourself..
)
I took some photos of the board, and I will post them up tomorrow. Possibly you may be able to have a quick look and see what you think.
Again, thankyou for the reply and Hopefully will have the pics up by tomorrow.