I accidentally attached my LCD cable with the battery still attached!
I have a Lenovo 330 15IGM. (I believe it’s the 15IGM, no where on this laptop is there anything more descriptive than Ideapad 330.)
I replaced a broken hinge and display back cover. The new back cover came with and I used the new WiFi and LCD cables. I repaired everything fine, however I forgot to disconnect the internal battery! As I was attaching the LCD cable to the motherboard, it wasn’t straight at first I could smell the dreaded burning plastic/electronics odor. An obvious short occurred with the continuous voltage on the backlight traces. The LCD cable is visibly toast on the end where the backlight traces are. I still had the old cable, so cleaned up the motherboard LCD connector and all the contacts appear intact.
I connected that and everything works including the LCD panel, except no backlight! When I connect to an external display, it all works as well. (Is there a way to see exactly which Pentium there is in on the motherboard without signing into the laptop. It’s a customer laptop.)
It seems likely that I blew a fuse or fuses on the motherboard itself, but is there a possibility that I damaged the backlight in the display itself? I would think the damage is likely in the motherboard.
My dilemma is should I replace the motherboard, or the LCD panel first? (Of if I could solder new fuses on if it’s obvious where they are and I can order them just as fast.)
Thanks for any help in advance!
I’m adding a few additional photos of both sides of the motherboard as requested. Here are a few of the first visible side:
Here’s a photo showing the top case having damage for one hinge screw as well, so opening is fine, but closing, the motherboard itself will put a little force on the hinge closing:
Here’s some photos of the back side of the motherboard:
I took a macro (iPhone13 Pro Max) picture of the fuse F2:
Than I took a picture under a microscope:
There IS continuity across F2. So that’s likely not the issue?
Questa è una buona domanda?