They are bleeder/startup resistors and indeed rather common to open up when there is no other obvious faults. In this case, they are actually 150K in parallel. R2, R3Bit hard to see from the image ... but are they 2 x 100k resistors above the IC?
I don't know the official term for them, but often the 'start-up' resistor/s go open circuit and cause a no go. Always check any high value resistors in the primary if no other obvious faults.
D10 appears to me to be the 5 volt rectifier ... it shouldn't have 24 volts on it.d10 is ok its getting around 28v
I don't see that having anything to do with your fault at present.should I change cy1?