Hello, it's my first post here, but I was around for a while.
My customer attempted to replace the keyboard on his own and end up bricking his Yoga 2 Pro.
One of the caps on the memory side of the board was burnt, I removed it (I'll attach foto later), I cannot figure out its value but it looks like decoupling so I guess nevermind. Now I got white charging light, blinking every 3 seconds or so, no reaction to power, however, if the battery and a PSU are plugged in, after pushing the power button and unplugging charger for a second I'm getting both power and charging lights on, apparently not affecting power state anyhow.
PL2 was visibly damaged, for testing purpose, I swapped it with PL4, no change.
Voltages are the same with or without battery, measured at end of coils, as follows:
PL7 8,24V
PL2 4,96V
PL3 3,33V
0V on all the rest.
Drop from ground to the end of coils on the multimeter in the diode mode:
PL2 320
PL3 330
PL4 370
PL7 373
PL8 001 <- ??
PL9 118
PL11 355
PL12 055
I would appreciate any help, thanks in advance!
My customer attempted to replace the keyboard on his own and end up bricking his Yoga 2 Pro.
One of the caps on the memory side of the board was burnt, I removed it (I'll attach foto later), I cannot figure out its value but it looks like decoupling so I guess nevermind. Now I got white charging light, blinking every 3 seconds or so, no reaction to power, however, if the battery and a PSU are plugged in, after pushing the power button and unplugging charger for a second I'm getting both power and charging lights on, apparently not affecting power state anyhow.
PL2 was visibly damaged, for testing purpose, I swapped it with PL4, no change.
Voltages are the same with or without battery, measured at end of coils, as follows:
PL7 8,24V
PL2 4,96V
PL3 3,33V
0V on all the rest.
Drop from ground to the end of coils on the multimeter in the diode mode:
PL2 320
PL3 330
PL4 370
PL7 373
PL8 001 <- ??
PL9 118
PL11 355
PL12 055
I would appreciate any help, thanks in advance!
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