So you have no LED's lighting up on the outside boards?
I'd always start with the basics:
Are the 2N2222A and 2N2907 transistors in the correct positions (they look the same)?
Are the MJE340's and MJE350's in the correct positions (they also look the same)?
Are the LED's oriented correctly on the outside boards?
Your shunt regulator appears to roughly be working, but it's regulating 50V below where it should be, and you have the voltage coming in to make this work. R3 and R4 set up this voltage, I would verify the resistances with the power off, R3 should be R3 should be 2.49K, R4 should be 147K.