Agree here 
About measurements to take:
See what voltages are coming up, are 3.3V and 5V stable? Does ram/cpu core get any voltage (if you have oscilloscope would be better to see if there is at least a try to start it).
Is b+ stable or fluctuating? (if not stable indicates some failure at later stage power rail) etc.
PL1009 is still the same resistance?

About measurements to take:
See what voltages are coming up, are 3.3V and 5V stable? Does ram/cpu core get any voltage (if you have oscilloscope would be better to see if there is at least a try to start it).
Is b+ stable or fluctuating? (if not stable indicates some failure at later stage power rail) etc.
PL1009 is still the same resistance?
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