There are lot's of knowalgable peopel on here, I thought maybe someone knew a bit about ultrasonic baths.
I bought one that doesn't work. I bought it as non runner figuring I will be able to sort it. Main reason I bought
it was to clean my bike chain, how lazy is that, but I suspect it will get plenty of use.

I had a little look and, well, I have no idea.
I gather you don't run the transducers without liquid in the bath, so you don't run them upside down, which I need to do to access the circuit boards unless I extend all the wires.
Can I replace the transducers with a resistance while I fool around with it?
Is there a simple test to see if the transducers work?

The timer board works as far as counting down the time and operating the heater up to set temperature and for set time, but no sign of life from the ultrasonic thingies.