Hello,
first of all I am a total noob with board level repair. My Dell XPS 15 9550 backlight died. I tried to replace the screen but it is still not working. I found the schematics online (only for rev 0.0, I have 1.0) but no board view which means I basically can't find anything really on the board. Not to mention that I have never really used a schematic.
Either way I managed to measure the backlight voltage on the 40pin connector. It is 9mv and supposed to be 25v. Any idea what I should try out next? No matter how much I look at the schematics I don't get any further. The only other thing I managed to do is to look at QV11 pin 1,2,5 and 6 which are also 9mv and probably supposed to be 25v too.
Here are a few pictures https://cdn.discordapp.com/attachmen...825/image0.jpg
https://cdn.discordapp.com/attachmen...355/image1.jpg
The capacitor under Q11 is the only one that looks a bit weird but besides that I found nothing. Any idea what that is used for? Any advise on anything about this is welcome, I have no idea what to do next and I definitely don't have the money to get a new board.
I hope someone can help me, thanks
first of all I am a total noob with board level repair. My Dell XPS 15 9550 backlight died. I tried to replace the screen but it is still not working. I found the schematics online (only for rev 0.0, I have 1.0) but no board view which means I basically can't find anything really on the board. Not to mention that I have never really used a schematic.
Either way I managed to measure the backlight voltage on the 40pin connector. It is 9mv and supposed to be 25v. Any idea what I should try out next? No matter how much I look at the schematics I don't get any further. The only other thing I managed to do is to look at QV11 pin 1,2,5 and 6 which are also 9mv and probably supposed to be 25v too.
Here are a few pictures https://cdn.discordapp.com/attachmen...825/image0.jpg
https://cdn.discordapp.com/attachmen...355/image1.jpg
The capacitor under Q11 is the only one that looks a bit weird but besides that I found nothing. Any idea what that is used for? Any advise on anything about this is welcome, I have no idea what to do next and I definitely don't have the money to get a new board.
I hope someone can help me, thanks
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