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Dear;
Accidently plug the laptop to another AC adaptor, and see the back screen, tried to use the orignal AC adaptor, same situation.
After checking found the the AC adaptor I used was having output greter than 19V.
what could be the issue?
Prakash Patel
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Prakash, right behind the DC Jack you should find a fuse labeled F2 or FU, just slightly to the left of the power socket. It is a SMD component, use a multimeter to check for continuity. The fuse is a Littlefuse 429 Series and the datasheet is available right here and the fuse is available from places like mouser.com part number 5760429007. WR ML. Hope this helps, good luck.
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try an external monitor, but your motherboard should be damaged by the energy higher than 19v, but there's still hope, try an external monitor and/or another power supply with 19V CC output.
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Carlos, the Thinkpad uses a 16V power supply not a 19V. The higher voltage can lead to further damage. The logic board will have a fuse for case like this.
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Are you saying that the computer comes on but only display's a black screen? If so, have you tried an external monitor?
oldturkey03 さんによる