S
spleenharvester
Hey all. First post so sorry if I'm in the wrong section!
Had a 6735s brought to me. Would power off whenever it damn well felt like, usually when pressing the touchpad. Eventually died, now boots without display and 5 flashing caps lock lights.
Upon dismantling the laptop it's become clear a screw from the touchpad had fallen out and was wedged with the head on the pins of a DC-DC converter, model # Texas Instruments TPS51120, the pins in question are those facing north in the following picture, (can take more pictures of surroundings if need be):
(Just replace dot with ., it won't let me because I'm a new member)
i dot Upload the image directly to the thread dot com/rcceZ.jpg
i dot Upload the image directly to the thread dot com/r0KTZ.jpg
Touching that area makes the laptop power off in the way it used to so the damage must have been done to that area, if not the TPS51120 chip itself.
Removing the screw stopped the random power offs, but now obviously, the thing is a brick.
Schematic for the chip is here: www dot ti dot com/general/docs/lit/getliterature.tsp?baseLiteratureNumber=SLUS670&track=no
PGOOD1 has 18v going through it when on mains. VREF2 has 9v going through it. I'm thinking TPS51120 must be fried?
Cheers!
Had a 6735s brought to me. Would power off whenever it damn well felt like, usually when pressing the touchpad. Eventually died, now boots without display and 5 flashing caps lock lights.
Upon dismantling the laptop it's become clear a screw from the touchpad had fallen out and was wedged with the head on the pins of a DC-DC converter, model # Texas Instruments TPS51120, the pins in question are those facing north in the following picture, (can take more pictures of surroundings if need be):
(Just replace dot with ., it won't let me because I'm a new member)
i dot Upload the image directly to the thread dot com/rcceZ.jpg
i dot Upload the image directly to the thread dot com/r0KTZ.jpg
Touching that area makes the laptop power off in the way it used to so the damage must have been done to that area, if not the TPS51120 chip itself.
Removing the screw stopped the random power offs, but now obviously, the thing is a brick.
Schematic for the chip is here: www dot ti dot com/general/docs/lit/getliterature.tsp?baseLiteratureNumber=SLUS670&track=no
PGOOD1 has 18v going through it when on mains. VREF2 has 9v going through it. I'm thinking TPS51120 must be fried?
Cheers!
