820-2936 no backlight ( at first ),

[Yoel Ren]

hi this came in with no backlight problem, I have 0v on ppvout_sw_lcdbklt but no short.
12.6v at bothside of fuse, while probing around, i realize, now if Icd is connected, fan would spin a bit, then stop. ( not turning on )
but if I remove lcd, fan will spin forever..

 

[2informaticos]

Check diode mode to ground at pins 2/3, 4 and 21/22 of J9000; w/ and w/o LCD connected.

 

[Yoel Ren]

i was measuring until pin 21/22.. diode mode is 0..
immediately realized this is shorted.. inject and poof, solved
thanks a lot..

 

[2informaticos]

You're welcome!