Electronics > Repair
No LED backlight on laptop after unplugging and re-plugging display cable
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gabiz_ro:
So,no voltage across capacitor.
Check fuse FG2 seems located near that cap but on other side of PCB
Labrat101:
I was looking at your photos
when I spotted this Is this a crack from the power socket to the black strip plug .
or is it a trick of lighting or something else .
I looked on another Lenovo that we had around not the same model but has the same screen and same year that cap on yours with no
power on the one I tested had 19v  . and I was trying to follow the tracks on your board when I notice this suspicious crack.
Please check and confirm  . if yes this maybe were the volts are going or not going . These power sockets do take a pounding
 form the plug being pulled out sharply
philipjfry:
You guys are the BEST!  :D

I checked FG2 just now and it was the culprit! So my initial hope of just having blown a fuse like I had seen somewhere else on a different model was "reasonable". I was just too blind to see that fuse on the back. FG1 and F11 I saw and checked, but FG2 somehow eluded me although it's right there on the other side.

Thanks for yout time and effort gabiz and labrat, I wouldn't have been able to do it without you! <3 (Well, maybe after putting it aside and having another look at it one week later, like you mentioned, labrat, but that's by no means a certainty.  ;))
Labrat101:
Really please that the problem has been found

johnfloda82:
same problem here too.  UG5 has
1. 0 volts
2. ground
3. 0 volts
4. 0volts
5. 3.3volts
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