Macbook Pro 15" 2010 Weird Popping Noises and bottom case screws.

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first, have created several images describe experiencing...

ever since got mbp during summer of 2010, have experienced slight hinge pop right side hinge. (see attachments) had "fixed" , sound went away... 4 months later, sound returns , have been living ever since...

anyways, issue related anomaly have experienced.

if take piece of paper , slide piece of paper under front left foot , slide same piece of paper under front right foot, can feel difference in amount of pressure mbp applying surface. although isn't grossly apparent, mbp seems apply more weight left side (side i/o , battery) right side (side super drive , hdd). weird?

if take screen , finger , kinda sway screen (like pulling rubber band), depending on how far screen opened, front right foot bounce , down (in rhythm screen sway).

in day day use, mbp doesn't wobble or grossly apparent. doesn't not apply pressure onto 4 feet... ugh.

piece puzzle fact during hard drive upgrade, noticed long bottom case screw (logic board corner) can torqued down substantially farther before no longer turns anymore. weird thing doesn't take more pressure "secure" other screws, spins around 1 , 2 more revolutions other screw when screwing down place.

can tell considered "secure" particular screw causes 1 2 mm depression in bottom case:

http://db.tt/tieslh59

weird? yes... when screw "secure", macbook pro isn't quite balanced. forced leave screw little "un secure" mbp stay on fours...
attributed hinge.
 



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