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i have this board without external display. it work well on the internal display, but my customer need to work on external display. No liquid, very clean board.
i have PP3V3_TBTLC = 1,1V, where is generated this power supply, on U1900?
I'm working on an 820-00840 board now, this board have a liquid spill.
i clean it with ultrasonic and change some broken component (like C3891,C3890,C3892, U3890)
i have this board very clean, no liquid, stop to work in use.
i have the 20V on usb-c, the current is cycling between 0,029A and 0,600A
PPBUS_G3H =10,92V too low no? battery+power supply.
PP3V3_S5 missing not short
PP1V8_S5 missing not short...
no i haven't 5V at L3500.
i find the problem, i have 3 resistors bad (RB701,RB706,R3506 100ohm instead of 2,2ohm). i change the three and the usb port work with external hard drive.
thanks for your help.