easynote ts44hr not powering on

[Cryptonix]

i have been asked to fix a Packard bell easynote ts44hr laptop, it does not show any indication of power. no lights at all. but if i plug the charger in i can definitely hear it drawing current. i have it disassebled on my dest right now but i see no blown chips. i see 2 red glass tubes on the underside near the battery socket labeled PD1 and PD2 and those looked cracked on the inside. possibly dead fuses?

 

[Cryptonix]

Good, measure the voltages on pin 1 (1,2,3), pin 4, pin 5 (5,6,7,8) of PQ6 and PQ7. The meaning of the numbers in parentheses, the pins are connected together.

PQ 6 is giving me 0.46
PQ 7 is 16.3

 

[jarotech]

Ok, but which pins did you measure, I need pin1, pin4 and pin5 of each transistor.

PQ6 pin1 =
....... pin4 =
....... pin5 =

PQ7 pin1 =
....... pin4 =
....... pin5 =

I need to know all the voltages. Thank you.

 

[Cryptonix]

Sorry for my lack of info there
Pq6
Pin 1 - 18.78
Pin 4 - 18.78
Pin 5 - 19.25

Pq7
Pin 1 - 18.78
Pin 4 - 18.78
Pin 5 - 2.53

 

[jarotech]

Ok, that make sense, what about PQ14 pin1,2,3,4,5 and 6.

 

[Cryptonix]

Ok, that make sense, what about PQ14 pin1,2,3,4,5 and 6.

just double checking i have the right chip here, pq14 is the NN122 chip is the one between pq 6 and pq 7 right?

i dont see a point marking p 1 on that chip so i will begin on the lower right.. screen connector below


p1 - 0
p2 - 2.98
p3 - 0
p4 - 0
p5 - 2.98
p6 - 0