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Hi, 820-00687-A died when closing bottom cover after successful repair (hall sensor on keyboard).
First it had 20v 0a only on one side of usb-c. After replacing U3100 (from ssd dead board CD3215C00 same markings) got 20v 0a on both sides of the cable.
Power rails:
8.69v PPBUS_G3H
20.06v...
820-3437-B clean board, no liquid trace visible.
Boots from charger or charged battery but does "not charging" (charging icon in MacOS says), takes 7-12A from charger with battery connected (or not - same). Magsafe - red led. Tested with 3 different batteries which are working on other board...
5V 0A on first USB-C connector
5V 0,29A on second
Removed U3200, cleaned the mess, made sure leaded pads not shorted.
we have short on cpu lines:
L3200 USB_UPC_PCH_XB_N and USB_UPC_PCH_XB_P - shorted to ground
L3000 USB_UPC_PCH_XA_N and USB_UPC_PCH_XA_P - shorted to ground
Is it worth...
Hello,
History: dead while watching a movie on a plane without charger.
820-00923 Board without battery, unplugged all connectors takes from charger:
20.03V
0.03A
On thermal camera:
a little heat on U7800
Power rails:
PPBUS_G3H - 13,7
PPDCIN_G3H 20,36
PP3V3_G3H 3,4
PP3V0_G3H 0,045...
820-4924 No Backlight (in very rare cases it's present like 1 time of 20)
PPVOUT_S0_LCDBKLT - 48V (on pin1 of J8300)
BKLT_SCL - 5V
BKLT_SDA - 5V
Tested with 3 displays.
replaced LVDS connector.
replaced U7700.
tested resistors on BKLT_SCL and BKLT_SDA - good.
I'll appriacate any solutions to...
Hello,
820-00239 turns on on charger, no liquid damage, no history.
Board without battery, unplugged all connectors takes from charger:
20.03V
0.622A
Board with battery doesn't start, turns off if connected while working.
On thermal camera:
more heat on U6903 (replaced)
less on D6902...
Hello,
820-00840 not turning on, no liquid damage, no history (customer told it's dead after sleep mode).
Board without battery, unplugged all connectors takes from charger:
20.33V
0.052A
Power rails:
PPBUS_G3H - 13.7V
PPDCIN_G3H - 20.35V
PP5V_S5 - 0V
PP3V3_G3H - 3.426V
PP3V3_S5 - 0V
PP1V8_S3...