Hi I have a Lenovo Carbon X1 Gen2 with i7-4600U with the screen not working after replacement. Also replaced the display cable.
I found two fuses that show 1 on the multi-meter but a different number if checked with ground. Don't know which I'd have to "fix" to make the screen work again. One is under the bios battery and the other in the corner next to where the cpu fan and one of the cables to the screen goes (sounds obvious eh? well I don't want to bridge one and break something more)
The one near fan is F33 5A/32V, the one next to RTC battery is F3 3A/32V. Upon further inspection the one near the battery is bellow the display cable and the one near the fan is the one near the other cable that goes to the screen.
Looking on the forums I saw people circled most of the time the big fuses, there's only one big F2 7A/24V which gives 001 like all of the other working fuses, this fuse seems to be for the power plug though.
Images:
http://i.imgur.com/7RWo1PO.jpg
http://i.imgur.com/eTzBVKL.jpg
http://i.imgur.com/XluiviJ.jpg
Close ups to the 2 fuses:
http://i.imgur.com/mUhonN9.jpg
http://i.imgur.com/fVVofaQ.jpg
Thanks.
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You need to test across the fuse
if they show 1 they are ok
There will be more fuses on the board you will have to find and test them
till you get to the one that is blown,
You need to find a replacement fuse once you find which is blown
bridging it means should something similar occur again it will take out more than the fuse -
I have exectly the same problem. To my understanding the fuse is OK when the resistance is nearly zero. If it shows 1 the fuse should be not working. For me the fuse 7 seems not to work. But it is all so small that I had trouble creating an shortcut so I did not really managed it. My Lenovo is still working properly when I plug in a external monitor. But the light of the display on my laptop display is very very dim. It is the backlight that is not working. I suppose it is fuse 7 that us blown but as I said really difficult to replace
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Bridging fuses on Carbon X1 Gen2 for no power to screen?
Discussion in 'Lenovo' started by zeros000, Feb 14, 2017.