Re: Dynatron Nomad - impressive!
Funnily enough I am working on a Nomad at the moment also.
I bought it at a car boot some time ago but only got it on the bench today.
As you say, very well built.
Mine has a problem with the local oscillator. If I start with the variable capacitor vanes fully out it starts, it continues to run (and tunes stations) until the vanes are about 2/3rds mshed when it stops.
However, to get it to start again requires fully opening the vanes again.
The tuning cap vanes are not shorting out at any point.
It is obvious that this is not a new fault, someone has changed several caps around the oscillator, the tuning cap vanes had an oily residue on them, looks like some has used switch cleaner on them. I have flushed away the residue with solvent.
I have changed the resistors around the oscillator transistor and the transistor itself but the fault is the same. I have left off for tonight and will resume tomorrow.
I also have found a lot of hiss on zero volume setting, I have tried changing the first AF transistor with a different type it made no difference. I have parked that issue until the oscillator is fixed.
When I eventually get it going I also intend adding a bluetooth module (in a way that could easily be removed and the set restored to its original condition).
Peter
|