Had a 6735s brought to me. Would power off whenever it damn well felt like, usually when pressing the touchpad.
It eventually turned off while I was trying to figure out what the heck's wrong and would then only boot with black screen, 5 flashing caps lock lights and a flashing amber HDD light ("Unspecified system board failure").
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, but I couldn't get a good, focused picture of the whole board... my camera blows):
http://i.imgur.com/rcceZ.jpg
http://i.imgur.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.
Anyone know where to start? I've gotten various 5.0V and 3.3V readings from surrounding components..
Schematic for the chip is here: http://www.ti.com/general/docs/lit/g...US670&track=no
Cheers!
It eventually turned off while I was trying to figure out what the heck's wrong and would then only boot with black screen, 5 flashing caps lock lights and a flashing amber HDD light ("Unspecified system board failure").
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, but I couldn't get a good, focused picture of the whole board... my camera blows):
http://i.imgur.com/rcceZ.jpg
http://i.imgur.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.
Anyone know where to start? I've gotten various 5.0V and 3.3V readings from surrounding components..
Schematic for the chip is here: http://www.ti.com/general/docs/lit/g...US670&track=no
Cheers!
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