Was a home build kit, I have a TU2 mk2 but not wired up correctly, a picture of inside back panel or circuit would be great.
It's for a QRP project. I can alter poor wiring and joints to get it working, but not as was designed.
I know it's a long shot, but someone always says "you should have said" etc.
Not as exciting as a fog horn, now that would be a piece of kit!