(347) 552-2258 [email protected]

820-00928 Power button not working

bjf

bjf

Member
This board was pretty clean. After replacing a few components around UA900, it's booting normally but the power button is not working. Nothing happens when I hold it down. I tried another button. No change. Any ideas where to look for something like this? Everything around the power button is clean.
 
bjf

bjf

Member
SMC_ONOFF_L is open at the power button (R4911) but measures fine at R5170. A break somewhere in the line apparently.
 
bjf

bjf

Member
Ok, just a blown trace. R5179 and R5256 are fine, but SW5200 is not connected to the line. Some damaged occurred at TPAC517 which seems to be the source of the problem. Need to figure out how to repair this line now.
 
You must log in or register to reply here.
Top