Well last post was in July last year! But I'm back again, I semi gave up on this but now for another go.
I have the circuit board and components all soldered in place, but it doesn't work!
For some reason I have the following values from the LM3194:
IC1
pin 1: 11.65v
pin 2: 0
pin 3: 12.07v
pin 4: 0
pin 5: 0.66v
pin 6: 0
pin 7: 0
pin 8: 0
pin 9: 12.07
IC2 is similar
so the sig (pin 5) seems far too low and I don't know why the Rhi, Ref and Adj are zero (pins 6-8)
As for the trimmers, they are all at zero as nothing is coming from pins 4,6,7,8
The pnp transistors and LEDs work when I touch the base with my voltmeter as it acts as a sink
the mosfet and capactitor have readings of only 0.66v
Any ideas?
Gary