You are here

Lenovo T400_no power on_mainboard faulty

2 posts / 0 new
Last post
vm
vm picture

Shorted MOSFET (the first one after power connector on mainboard):
Q34 SI4435BDY
and cracked cap (near of the FET):
C697 4.7UF 10% X7R 25V 3216. (they are four in the same place, filters)

If no FET available_ it can be used one from the secondary battery port, from the same PCB.
Q9 TPC8111 - is equivalent.

 

File attachment: 
Comments
zsugori
zsugori picture
****

2