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820-3332 no internal display

A

andrew boren

Member
i have a 820-3332 that came in for no power, after diag realized its powering on fully just no internal display, checked smc_lid and realized it was 0, repaired and got screen for about 30 seconds, then black. figured out after a few seconds i lost PP5VR3V3_SW_LCD_ISNS, so i jumped it from pin 2 to pin 5 of u9000 and no more loss of display after a few seconds, leading me to believe u9000 is bad, question is do i have to replace it, what harm will just jumping it do. i dont have a donor board for this board so if i have to replace it for some reason where can i get this chip?
 
A

andrew boren

Member
no i touched up all the solder joints on u9000, i just touched up u8900 even tho it looked fine and its lasting longer than 20 seconds this time, "jumper removed ofc" so i guess i had a bad solder joint, but i wounder would my jumper have caused any issues?
 
J

JohnB8812

New member
No U8900’s joints cracking is the signature fault of the 3332 board. Typically that fixes the video issues on it. Likely no issue with jumper or U9000 at all.
 
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