Thinkpad Carbon X1, LMQ-1 MB 12298-2 Black screen

[pratyush]

I have 2 thinkpad carbon x1..
Problem I am facing with these 2 are listing below..
1st
Mobo is getting on And there will be light on keyboard..
In diagnosis got 2 burned fuse in lvds section F3(for3.3v) and F7(for19v) changed it bt condition remains same
And F3 burned out again...then i use jumper wire

bt condition remains same.

2nd
Mobo is getting on nothing on screen, Not presense of light on keyboard.
Lvds section seems to be ok

Voltages on coils in both case L3 L4 L5 L7 and L28 are okk

Unfortunately don't have exact schematic so facing prob in diagnosis..


for LVDS section i used schematic of thinkpad t430 which i found same
any suggestion plz...

[ktmmotocross]

Re: Thinkpad Carbon X1, LMQ-1 MB 12298-2 Black screen

if u burning fuses, than u must have short