Repair For MacBook Pro A1989 That Won't Turn On

crwdns2935421:0crwdne2935421:0 crwdns2935423:0crwdne2935423:0

crwdns2935425:015crwdne2935425:0

crwdns2935419:0crwdne2935419:0

crwdns2936315:0crwdne2936315:0

crwdns2936323:0crwdne2936323:0

crwdns2931653:015crwdne2931653:0

Repair For MacBook Pro A1989 That Won't Turn On: crwdns2935265:00crwdnd2935265:01crwdnd2935265:03crwdne2935265:0

Repair For MacBook Pro A1989 That Won't Turn On: crwdns2935265:00crwdnd2935265:02crwdnd2935265:03crwdne2935265:0

Repair For MacBook Pro A1989 That Won't Turn On: crwdns2935265:00crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

Unplug BY-T200. Solder the chip back to the motherboard.
Plug in the power cable. The BY-3200 shows an increase in input voltage from 5V to 20V.
The current jump on the DC power supply is normal, which indicates that the motherboard is turned on.

crwdns2944171:0crwdnd2944171:0crwdnd2944171:0crwdnd2944171:0crwdne2944171:0