>220 ohm resistor is connected to wrong side of 47k's

Oh f....or goodness sake, right in front of me all the time. Thanks
to you and Kelly for spotting it. I should be grateful I don't often
make mistakes like that (and especially one that could have been
very noisy, smelly and shrapnelly), but it's still embarassing

I've changed the PCB, but it doesn't flash. Possibly the MOCs are
dead, have to dig out the isolating transformer and check, so I'll
scrounge up some new parts and let you know

Will also put up the proper layout and leave it there for Googlers

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