Power book 180

[Maccollector]

HI Brains Trust
I am trying to fix my second power book 180, but this time it is not as simple as diode. This time I get 7.7v on the first power inductor ( red and black ). Power does not flow further, Second power inductor seems to be shorted to ground , black probe on the ground, red on either end, meter in continuity mode, and I get beep on both ends. I am correct here in saying that power inductor is gone? or there is something else
One more interesting thing is that U3 chip is getting hot, over 30 deg, other remain cold.

 

[Maccollector]

who ever opened this machine before me, did not take care. LCD screen cable has been cut. Machine now powers on with a chime, but when I press interrupt button I get sad/ dead mac chimes

 

[finkmac]

Machine now powers on with a chime, but when I press interrupt button I get sad/ dead mac chimes

pretty sure this is normal behaviour

 

[cheesestraws]

Machine now powers on with a chime, but when I press interrupt button I get sad/ dead mac chimes

pretty sure this is normal behaviour

yup this is normal if it's sitting at the flashing ? or something. pressing the interrupt button fires an NMI and the only thing that catches it is the sad mac handler thingy. that's actually quite a good sign.